Home / 121,182.79-181,689.86-53,678.18

Finding the Fourth Proportional to 121,182.79, 181,689.86 and 53,678.18

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Solution

The fourth proportional to 121,182.79, 181,689.86 and 53,678.18 is: 80,479.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,182.79 : 181,689.86 = 53,678.18 : x
  2. Step 2: Convert to fraction form
    121,182.79/181,689.86 = 53,678.18/x
  3. Step 3: Cross multiply
    121,182.79x = 181,689.86 × 53,678.18
  4. Step 4: Simplify right side
    121,182.79x = 9,752,780,420.83
  5. Step 5: Solve for x
    x = 9,752,780,420.83/121,182.79
  6. Step 6: Final answer
    x = 80,479.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.