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Finding the Fourth Proportional to 173,405.60, 260,108.40 and 89,424.80

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Solution

The fourth proportional to 173,405.60, 260,108.40 and 89,424.80 is: 134,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,405.60 : 260,108.40 = 89,424.80 : x
  2. Step 2: Convert to fraction form
    173,405.60/260,108.40 = 89,424.80/x
  3. Step 3: Cross multiply
    173,405.60x = 260,108.40 × 89,424.80
  4. Step 4: Simplify right side
    173,405.60x = 23,260,141,648.32
  5. Step 5: Solve for x
    x = 23,260,141,648.32/173,405.60
  6. Step 6: Final answer
    x = 134,137.20

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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.