Home / 187,214.60-280,823.10-74,904.20

Finding the Fourth Proportional to 187,214.60, 280,823.10 and 74,904.20

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Solution

The fourth proportional to 187,214.60, 280,823.10 and 74,904.20 is: 112,356.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,214.60 : 280,823.10 = 74,904.20 : x
  2. Step 2: Convert to fraction form
    187,214.60/280,823.10 = 74,904.20/x
  3. Step 3: Cross multiply
    187,214.60x = 280,823.10 × 74,904.20
  4. Step 4: Simplify right side
    187,214.60x = 21,034,829,647.02
  5. Step 5: Solve for x
    x = 21,034,829,647.02/187,214.60
  6. Step 6: Final answer
    x = 112,356.78

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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.