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Finding the Fourth Proportional to 99,491.80, 137,302.14 and 57,052.12

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Solution

The fourth proportional to 99,491.80, 137,302.14 and 57,052.12 is: 78,733.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,491.80 : 137,302.14 = 57,052.12 : x
  2. Step 2: Convert to fraction form
    99,491.80/137,302.14 = 57,052.12/x
  3. Step 3: Cross multiply
    99,491.80x = 137,302.14 × 57,052.12
  4. Step 4: Simplify right side
    99,491.80x = 7,833,378,167.54
  5. Step 5: Solve for x
    x = 7,833,378,167.54/99,491.80
  6. Step 6: Final answer
    x = 78,733.91

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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.