Home / 131,876.20-181,988.90-71,448.35

Finding the Fourth Proportional to 131,876.20, 181,988.90 and 71,448.35

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Solution

The fourth proportional to 131,876.20, 181,988.90 and 71,448.35 is: 98,598.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,876.20 : 181,988.90 = 71,448.35 : x
  2. Step 2: Convert to fraction form
    131,876.20/181,988.90 = 71,448.35/x
  3. Step 3: Cross multiply
    131,876.20x = 181,988.90 × 71,448.35
  4. Step 4: Simplify right side
    131,876.20x = 13,002,806,623.32
  5. Step 5: Solve for x
    x = 13,002,806,623.32/131,876.20
  6. Step 6: Final answer
    x = 98,598.58

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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.