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Finding the Fourth Proportional to 99,199.74, 136,948.95 and 76,488.96

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Solution

The fourth proportional to 99,199.74, 136,948.95 and 76,488.96 is: 105,595.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,199.74 : 136,948.95 = 76,488.96 : x
  2. Step 2: Convert to fraction form
    99,199.74/136,948.95 = 76,488.96/x
  3. Step 3: Cross multiply
    99,199.74x = 136,948.95 × 76,488.96
  4. Step 4: Simplify right side
    99,199.74x = 10,475,082,758.59
  5. Step 5: Solve for x
    x = 10,475,082,758.59/99,199.74
  6. Step 6: Final answer
    x = 105,595.87

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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.