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Finding the Fourth Proportional to 145,780.76, 218,700.81 and 55,817.10

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Solution

The fourth proportional to 145,780.76, 218,700.81 and 55,817.10 is: 83,737.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,780.76 : 218,700.81 = 55,817.10 : x
  2. Step 2: Convert to fraction form
    145,780.76/218,700.81 = 55,817.10/x
  3. Step 3: Cross multiply
    145,780.76x = 218,700.81 × 55,817.10
  4. Step 4: Simplify right side
    145,780.76x = 12,207,244,981.85
  5. Step 5: Solve for x
    x = 12,207,244,981.85/145,780.76
  6. Step 6: Final answer
    x = 83,737.01

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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.