Home / 145,584.10-218,302.30-66,630.70

Finding the Fourth Proportional to 145,584.10, 218,302.30 and 66,630.70

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Solution

The fourth proportional to 145,584.10, 218,302.30 and 66,630.70 is: 99,912.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,584.10 : 218,302.30 = 66,630.70 : x
  2. Step 2: Convert to fraction form
    145,584.10/218,302.30 = 66,630.70/x
  3. Step 3: Cross multiply
    145,584.10x = 218,302.30 × 66,630.70
  4. Step 4: Simplify right side
    145,584.10x = 14,545,635,060.61
  5. Step 5: Solve for x
    x = 14,545,635,060.61/145,584.10
  6. Step 6: Final answer
    x = 99,912.25

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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.