Home / 156,930.32-235,212.96-72,513.20

Finding the Fourth Proportional to 156,930.32, 235,212.96 and 72,513.20

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Solution

The fourth proportional to 156,930.32, 235,212.96 and 72,513.20 is: 108,685.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.32 : 235,212.96 = 72,513.20 : x
  2. Step 2: Convert to fraction form
    156,930.32/235,212.96 = 72,513.20/x
  3. Step 3: Cross multiply
    156,930.32x = 235,212.96 × 72,513.20
  4. Step 4: Simplify right side
    156,930.32x = 17,056,044,411.07
  5. Step 5: Solve for x
    x = 17,056,044,411.07/156,930.32
  6. Step 6: Final answer
    x = 108,685.46

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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.