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Finding the Fourth Proportional to 144,497.70, 216,746.55 and 92,139.30

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Solution

The fourth proportional to 144,497.70, 216,746.55 and 92,139.30 is: 138,208.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,497.70 : 216,746.55 = 92,139.30 : x
  2. Step 2: Convert to fraction form
    144,497.70/216,746.55 = 92,139.30/x
  3. Step 3: Cross multiply
    144,497.70x = 216,746.55 × 92,139.30
  4. Step 4: Simplify right side
    144,497.70x = 19,970,875,394.42
  5. Step 5: Solve for x
    x = 19,970,875,394.42/144,497.70
  6. Step 6: Final answer
    x = 138,208.95

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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.