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Finding the Fourth Proportional to 99,141.83, 148,729.67 and 39,138.92

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Solution

The fourth proportional to 99,141.83, 148,729.67 and 39,138.92 is: 58,715.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,141.83 : 148,729.67 = 39,138.92 : x
  2. Step 2: Convert to fraction form
    99,141.83/148,729.67 = 39,138.92/x
  3. Step 3: Cross multiply
    99,141.83x = 148,729.67 × 39,138.92
  4. Step 4: Simplify right side
    99,141.83x = 5,821,118,655.76
  5. Step 5: Solve for x
    x = 5,821,118,655.76/99,141.83
  6. Step 6: Final answer
    x = 58,715.06

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1.5x scale

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.