Home / 131,780.40-181,856.67-71,351.01

Finding the Fourth Proportional to 131,780.40, 181,856.67 and 71,351.01

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Solution

The fourth proportional to 131,780.40, 181,856.67 and 71,351.01 is: 98,464.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,780.40 : 181,856.67 = 71,351.01 : x
  2. Step 2: Convert to fraction form
    131,780.40/181,856.67 = 71,351.01/x
  3. Step 3: Cross multiply
    131,780.40x = 181,856.67 × 71,351.01
  4. Step 4: Simplify right side
    131,780.40x = 12,975,657,079.74
  5. Step 5: Solve for x
    x = 12,975,657,079.74/131,780.40
  6. Step 6: Final answer
    x = 98,464.24

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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.