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Finding the Fourth Proportional to 156,042.70, 234,064.05 and 77,310.70

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Solution

The fourth proportional to 156,042.70, 234,064.05 and 77,310.70 is: 115,966.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,042.70 : 234,064.05 = 77,310.70 : x
  2. Step 2: Convert to fraction form
    156,042.70/234,064.05 = 77,310.70/x
  3. Step 3: Cross multiply
    156,042.70x = 234,064.05 × 77,310.70
  4. Step 4: Simplify right side
    156,042.70x = 18,095,655,550.34
  5. Step 5: Solve for x
    x = 18,095,655,550.34/156,042.70
  6. Step 6: Final answer
    x = 115,966.05

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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.