Home / 131,778.39-181,853.92-71,349.01

Finding the Fourth Proportional to 131,778.39, 181,853.92 and 71,349.01

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Solution

The fourth proportional to 131,778.39, 181,853.92 and 71,349.01 is: 98,461.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,778.39 : 181,853.92 = 71,349.01 : x
  2. Step 2: Convert to fraction form
    131,778.39/181,853.92 = 71,349.01/x
  3. Step 3: Cross multiply
    131,778.39x = 181,853.92 × 71,349.01
  4. Step 4: Simplify right side
    131,778.39x = 12,975,097,156.62
  5. Step 5: Solve for x
    x = 12,975,097,156.62/131,778.39
  6. Step 6: Final answer
    x = 98,461.49

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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.