Home / 131,715.30-181,718.19-83,957.70

Finding the Fourth Proportional to 131,715.30, 181,718.19 and 83,957.70

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Solution

The fourth proportional to 131,715.30, 181,718.19 and 83,957.70 is: 115,830.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,715.30 : 181,718.19 = 83,957.70 : x
  2. Step 2: Convert to fraction form
    131,715.30/181,718.19 = 83,957.70/x
  3. Step 3: Cross multiply
    131,715.30x = 181,718.19 × 83,957.70
  4. Step 4: Simplify right side
    131,715.30x = 15,256,641,280.56
  5. Step 5: Solve for x
    x = 15,256,641,280.56/131,715.30
  6. Step 6: Final answer
    x = 115,830.44

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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.