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Finding the Fourth Proportional to 112,475.60, 155,211.60 and 64,730.60

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Solution

The fourth proportional to 112,475.60, 155,211.60 and 64,730.60 is: 89,325.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,475.60 : 155,211.60 = 64,730.60 : x
  2. Step 2: Convert to fraction form
    112,475.60/155,211.60 = 64,730.60/x
  3. Step 3: Cross multiply
    112,475.60x = 155,211.60 × 64,730.60
  4. Step 4: Simplify right side
    112,475.60x = 10,046,939,994.96
  5. Step 5: Solve for x
    x = 10,046,939,994.96/112,475.60
  6. Step 6: Final answer
    x = 89,325.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.