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Finding the Fourth Proportional to 109,421.99, 151,126.89 and 73,549.71

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Solution

The fourth proportional to 109,421.99, 151,126.89 and 73,549.71 is: 101,582.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,421.99 : 151,126.89 = 73,549.71 : x
  2. Step 2: Convert to fraction form
    109,421.99/151,126.89 = 73,549.71/x
  3. Step 3: Cross multiply
    109,421.99x = 151,126.89 × 73,549.71
  4. Step 4: Simplify right side
    109,421.99x = 11,115,338,932.70
  5. Step 5: Solve for x
    x = 11,115,338,932.70/109,421.99
  6. Step 6: Final answer
    x = 101,582.32

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1.5x scale

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.