Home / 121,289.60-182,042.40-71,307.20

Finding the Fourth Proportional to 121,289.60, 182,042.40 and 71,307.20

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Solution

The fourth proportional to 121,289.60, 182,042.40 and 71,307.20 is: 107,024.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,289.60 : 182,042.40 = 71,307.20 : x
  2. Step 2: Convert to fraction form
    121,289.60/182,042.40 = 71,307.20/x
  3. Step 3: Cross multiply
    121,289.60x = 182,042.40 × 71,307.20
  4. Step 4: Simplify right side
    121,289.60x = 12,980,933,825.28
  5. Step 5: Solve for x
    x = 12,980,933,825.28/121,289.60
  6. Step 6: Final answer
    x = 107,024.29

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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.