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Finding the Fourth Proportional to 144,593.60, 216,869.16 and 84,649.76

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Solution

The fourth proportional to 144,593.60, 216,869.16 and 84,649.76 is: 126,962.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,593.60 : 216,869.16 = 84,649.76 : x
  2. Step 2: Convert to fraction form
    144,593.60/216,869.16 = 84,649.76/x
  3. Step 3: Cross multiply
    144,593.60x = 216,869.16 × 84,649.76
  4. Step 4: Simplify right side
    144,593.60x = 18,357,922,345.40
  5. Step 5: Solve for x
    x = 18,357,922,345.40/144,593.60
  6. Step 6: Final answer
    x = 126,962.21

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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.