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Finding the Fourth Proportional to 96,402.70, 144,312.45 and 85,905.10

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Solution

The fourth proportional to 96,402.70, 144,312.45 and 85,905.10 is: 128,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,402.70 : 144,312.45 = 85,905.10 : x
  2. Step 2: Convert to fraction form
    96,402.70/144,312.45 = 85,905.10/x
  3. Step 3: Cross multiply
    96,402.70x = 144,312.45 × 85,905.10
  4. Step 4: Simplify right side
    96,402.70x = 12,397,175,448.50
  5. Step 5: Solve for x
    x = 12,397,175,448.50/96,402.70
  6. Step 6: Final answer
    x = 128,597.80

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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.