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Finding the Fourth Proportional to 145,859.99, 218,658.67 and 52,343.87

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Solution

The fourth proportional to 145,859.99, 218,658.67 and 52,343.87 is: 78,468.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,859.99 : 218,658.67 = 52,343.87 : x
  2. Step 2: Convert to fraction form
    145,859.99/218,658.67 = 52,343.87/x
  3. Step 3: Cross multiply
    145,859.99x = 218,658.67 × 52,343.87
  4. Step 4: Simplify right side
    145,859.99x = 11,445,439,772.70
  5. Step 5: Solve for x
    x = 11,445,439,772.70/145,859.99
  6. Step 6: Final answer
    x = 78,468.68

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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.