Home / 121,631.80-182,447.70-102,386.20

Finding the Fourth Proportional to 121,631.80, 182,447.70 and 102,386.20

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Solution

The fourth proportional to 121,631.80, 182,447.70 and 102,386.20 is: 153,579.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,631.80 : 182,447.70 = 102,386.20 : x
  2. Step 2: Convert to fraction form
    121,631.80/182,447.70 = 102,386.20/x
  3. Step 3: Cross multiply
    121,631.80x = 182,447.70 × 102,386.20
  4. Step 4: Simplify right side
    121,631.80x = 18,680,126,701.74
  5. Step 5: Solve for x
    x = 18,680,126,701.74/121,631.80
  6. Step 6: Final answer
    x = 153,579.30

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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.