Home / 121,585.69-182,442.75-86,275.18

Finding the Fourth Proportional to 121,585.69, 182,442.75 and 86,275.18

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Solution

The fourth proportional to 121,585.69, 182,442.75 and 86,275.18 is: 129,458.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,585.69 : 182,442.75 = 86,275.18 : x
  2. Step 2: Convert to fraction form
    121,585.69/182,442.75 = 86,275.18/x
  3. Step 3: Cross multiply
    121,585.69x = 182,442.75 × 86,275.18
  4. Step 4: Simplify right side
    121,585.69x = 15,740,281,095.95
  5. Step 5: Solve for x
    x = 15,740,281,095.95/121,585.69
  6. Step 6: Final answer
    x = 129,458.34

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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.