Home / 131,783.83-181,862.01-71,355.20

Finding the Fourth Proportional to 131,783.83, 181,862.01 and 71,355.20

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Solution

The fourth proportional to 131,783.83, 181,862.01 and 71,355.20 is: 98,470.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,783.83 : 181,862.01 = 71,355.20 : x
  2. Step 2: Convert to fraction form
    131,783.83/181,862.01 = 71,355.20/x
  3. Step 3: Cross multiply
    131,783.83x = 181,862.01 × 71,355.20
  4. Step 4: Simplify right side
    131,783.83x = 12,976,799,186.64
  5. Step 5: Solve for x
    x = 12,976,799,186.64/131,783.83
  6. Step 6: Final answer
    x = 98,470.35

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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.