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Finding the Fourth Proportional to 107,872.30, 148,864.47 and 60,128.67

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Solution

The fourth proportional to 107,872.30, 148,864.47 and 60,128.67 is: 82,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,872.30 : 148,864.47 = 60,128.67 : x
  2. Step 2: Convert to fraction form
    107,872.30/148,864.47 = 60,128.67/x
  3. Step 3: Cross multiply
    107,872.30x = 148,864.47 × 60,128.67
  4. Step 4: Simplify right side
    107,872.30x = 8,951,022,924.11
  5. Step 5: Solve for x
    x = 8,951,022,924.11/107,872.30
  6. Step 6: Final answer
    x = 82,977.95

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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.