Home / 156,985.52-216,635.28-89,008.70

Finding the Fourth Proportional to 156,985.52, 216,635.28 and 89,008.70

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Solution

The fourth proportional to 156,985.52, 216,635.28 and 89,008.70 is: 122,829.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,985.52 : 216,635.28 = 89,008.70 : x
  2. Step 2: Convert to fraction form
    156,985.52/216,635.28 = 89,008.70/x
  3. Step 3: Cross multiply
    156,985.52x = 216,635.28 × 89,008.70
  4. Step 4: Simplify right side
    156,985.52x = 19,282,424,646.94
  5. Step 5: Solve for x
    x = 19,282,424,646.94/156,985.52
  6. Step 6: Final answer
    x = 122,829.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.