Home / 124,830.90-187,246.35-72,213.30

Finding the Fourth Proportional to 124,830.90, 187,246.35 and 72,213.30

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Solution

The fourth proportional to 124,830.90, 187,246.35 and 72,213.30 is: 108,319.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,830.90 : 187,246.35 = 72,213.30 : x
  2. Step 2: Convert to fraction form
    124,830.90/187,246.35 = 72,213.30/x
  3. Step 3: Cross multiply
    124,830.90x = 187,246.35 × 72,213.30
  4. Step 4: Simplify right side
    124,830.90x = 13,521,676,846.46
  5. Step 5: Solve for x
    x = 13,521,676,846.46/124,830.90
  6. Step 6: Final answer
    x = 108,319.95

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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.