Home / 156,657.10-234,985.65-72,417.10

Finding the Fourth Proportional to 156,657.10, 234,985.65 and 72,417.10

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Solution

The fourth proportional to 156,657.10, 234,985.65 and 72,417.10 is: 108,625.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,657.10 : 234,985.65 = 72,417.10 : x
  2. Step 2: Convert to fraction form
    156,657.10/234,985.65 = 72,417.10/x
  3. Step 3: Cross multiply
    156,657.10x = 234,985.65 × 72,417.10
  4. Step 4: Simplify right side
    156,657.10x = 17,016,979,314.62
  5. Step 5: Solve for x
    x = 17,016,979,314.62/156,657.10
  6. Step 6: Final answer
    x = 108,625.65

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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.