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Finding the Fourth Proportional to 89,897,761.60, 134,846,642.40 and 80,323,950.40

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Solution

The fourth proportional to 89,897,761.60, 134,846,642.40 and 80,323,950.40 is: 120,485,925.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,897,761.60 : 134,846,642.40 = 80,323,950.40 : x
  2. Step 2: Convert to fraction form
    89,897,761.60/134,846,642.40 = 80,323,950.40/x
  3. Step 3: Cross multiply
    89,897,761.60x = 134,846,642.40 × 80,323,950.40
  4. Step 4: Simplify right side
    89,897,761.60x = 10,831,415,015,744,138
  5. Step 5: Solve for x
    x = 10,831,415,015,744,138/89,897,761.60
  6. Step 6: Final answer
    x = 120,485,925.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.