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Finding the Fourth Proportional to 145,519.80, 218,117.70 and 56,743.80

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Solution

The fourth proportional to 145,519.80, 218,117.70 and 56,743.80 is: 85,052.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,519.80 : 218,117.70 = 56,743.80 : x
  2. Step 2: Convert to fraction form
    145,519.80/218,117.70 = 56,743.80/x
  3. Step 3: Cross multiply
    145,519.80x = 218,117.70 × 56,743.80
  4. Step 4: Simplify right side
    145,519.80x = 12,376,827,145.26
  5. Step 5: Solve for x
    x = 12,376,827,145.26/145,519.80
  6. Step 6: Final answer
    x = 85,052.53

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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.