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Finding the Fourth Proportional to 145,618.81, 218,443.12 and 55,737.04

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Solution

The fourth proportional to 145,618.81, 218,443.12 and 55,737.04 is: 83,611.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,618.81 : 218,443.12 = 55,737.04 : x
  2. Step 2: Convert to fraction form
    145,618.81/218,443.12 = 55,737.04/x
  3. Step 3: Cross multiply
    145,618.81x = 218,443.12 × 55,737.04
  4. Step 4: Simplify right side
    145,618.81x = 12,175,372,917.16
  5. Step 5: Solve for x
    x = 12,175,372,917.16/145,618.81
  6. Step 6: Final answer
    x = 83,611.27

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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.