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Finding the Fourth Proportional to 157,730.13, 236,398.26 and 78,866.91

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Solution

The fourth proportional to 157,730.13, 236,398.26 and 78,866.91 is: 118,201.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,730.13 : 236,398.26 = 78,866.91 : x
  2. Step 2: Convert to fraction form
    157,730.13/236,398.26 = 78,866.91/x
  3. Step 3: Cross multiply
    157,730.13x = 236,398.26 × 78,866.91
  4. Step 4: Simplify right side
    157,730.13x = 18,644,000,295.58
  5. Step 5: Solve for x
    x = 18,644,000,295.58/157,730.13
  6. Step 6: Final answer
    x = 118,201.90

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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.