Home / 131,817.92-181,907.80-71,387.18

Finding the Fourth Proportional to 131,817.92, 181,907.80 and 71,387.18

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Solution

The fourth proportional to 131,817.92, 181,907.80 and 71,387.18 is: 98,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,817.92 : 181,907.80 = 71,387.18 : x
  2. Step 2: Convert to fraction form
    131,817.92/181,907.80 = 71,387.18/x
  3. Step 3: Cross multiply
    131,817.92x = 181,907.80 × 71,387.18
  4. Step 4: Simplify right side
    131,817.92x = 12,985,884,862.00
  5. Step 5: Solve for x
    x = 12,985,884,862.00/131,817.92
  6. Step 6: Final answer
    x = 98,513.80

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1.5x scale

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.