Home / 156,988.52-216,639.42-89,011.70

Finding the Fourth Proportional to 156,988.52, 216,639.42 and 89,011.70

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Solution

The fourth proportional to 156,988.52, 216,639.42 and 89,011.70 is: 122,833.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,988.52 : 216,639.42 = 89,011.70 : x
  2. Step 2: Convert to fraction form
    156,988.52/216,639.42 = 89,011.70/x
  3. Step 3: Cross multiply
    156,988.52x = 216,639.42 × 89,011.70
  4. Step 4: Simplify right side
    156,988.52x = 19,283,443,061.21
  5. Step 5: Solve for x
    x = 19,283,443,061.21/156,988.52
  6. Step 6: Final answer
    x = 122,833.46

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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.