Home / 98,685.19-147,896.56-85,475.71

Finding the Fourth Proportional to 98,685.19, 147,896.56 and 85,475.71

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Solution

The fourth proportional to 98,685.19, 147,896.56 and 85,475.71 is: 128,099.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,685.19 : 147,896.56 = 85,475.71 : x
  2. Step 2: Convert to fraction form
    98,685.19/147,896.56 = 85,475.71/x
  3. Step 3: Cross multiply
    98,685.19x = 147,896.56 × 85,475.71
  4. Step 4: Simplify right side
    98,685.19x = 12,641,563,472.56
  5. Step 5: Solve for x
    x = 12,641,563,472.56/98,685.19
  6. Step 6: Final answer
    x = 128,099.91

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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.