Home / 99,835.68-149,789.16-42,885.66

Finding the Fourth Proportional to 99,835.68, 149,789.16 and 42,885.66

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Solution

The fourth proportional to 99,835.68, 149,789.16 and 42,885.66 is: 64,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,835.68 : 149,789.16 = 42,885.66 : x
  2. Step 2: Convert to fraction form
    99,835.68/149,789.16 = 42,885.66/x
  3. Step 3: Cross multiply
    99,835.68x = 149,789.16 × 42,885.66
  4. Step 4: Simplify right side
    99,835.68x = 6,423,806,987.45
  5. Step 5: Solve for x
    x = 6,423,806,987.45/99,835.68
  6. Step 6: Final answer
    x = 64,343.80

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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.