Home / 187,215.10-280,823.85-74,904.70

Finding the Fourth Proportional to 187,215.10, 280,823.85 and 74,904.70

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Solution

The fourth proportional to 187,215.10, 280,823.85 and 74,904.70 is: 112,357.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,215.10 : 280,823.85 = 74,904.70 : x
  2. Step 2: Convert to fraction form
    187,215.10/280,823.85 = 74,904.70/x
  3. Step 3: Cross multiply
    187,215.10x = 280,823.85 × 74,904.70
  4. Step 4: Simplify right side
    187,215.10x = 21,035,026,237.10
  5. Step 5: Solve for x
    x = 21,035,026,237.10/187,215.10
  6. Step 6: Final answer
    x = 112,357.53

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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.