Home / 109,620.10-151,275.74-61,876.53

Finding the Fourth Proportional to 109,620.10, 151,275.74 and 61,876.53

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Solution

The fourth proportional to 109,620.10, 151,275.74 and 61,876.53 is: 85,389.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,620.10 : 151,275.74 = 61,876.53 : x
  2. Step 2: Convert to fraction form
    109,620.10/151,275.74 = 61,876.53/x
  3. Step 3: Cross multiply
    109,620.10x = 151,275.74 × 61,876.53
  4. Step 4: Simplify right side
    109,620.10x = 9,360,417,864.38
  5. Step 5: Solve for x
    x = 9,360,417,864.38/109,620.10
  6. Step 6: Final answer
    x = 85,389.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.