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Finding the Fourth Proportional to 144,630.91, 216,572.55 and 99,790.53

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Solution

The fourth proportional to 144,630.91, 216,572.55 and 99,790.53 is: 149,427.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,630.91 : 216,572.55 = 99,790.53 : x
  2. Step 2: Convert to fraction form
    144,630.91/216,572.55 = 99,790.53/x
  3. Step 3: Cross multiply
    144,630.91x = 216,572.55 × 99,790.53
  4. Step 4: Simplify right side
    144,630.91x = 21,611,889,547.95
  5. Step 5: Solve for x
    x = 21,611,889,547.95/144,630.91
  6. Step 6: Final answer
    x = 149,427.88

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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.