Home / 145,440.30-218,257.65-66,513.90

Finding the Fourth Proportional to 145,440.30, 218,257.65 and 66,513.90

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Solution

The fourth proportional to 145,440.30, 218,257.65 and 66,513.90 is: 99,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,440.30 : 218,257.65 = 66,513.90 : x
  2. Step 2: Convert to fraction form
    145,440.30/218,257.65 = 66,513.90/x
  3. Step 3: Cross multiply
    145,440.30x = 218,257.65 × 66,513.90
  4. Step 4: Simplify right side
    145,440.30x = 14,517,167,506.34
  5. Step 5: Solve for x
    x = 14,517,167,506.34/145,440.30
  6. Step 6: Final answer
    x = 99,815.30

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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.