Home / 209,587.20-289,319.76-124,712.16

Finding the Fourth Proportional to 209,587.20, 289,319.76 and 124,712.16

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Solution

The fourth proportional to 209,587.20, 289,319.76 and 124,712.16 is: 172,155.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,587.20 : 289,319.76 = 124,712.16 : x
  2. Step 2: Convert to fraction form
    209,587.20/289,319.76 = 124,712.16/x
  3. Step 3: Cross multiply
    209,587.20x = 289,319.76 × 124,712.16
  4. Step 4: Simplify right side
    209,587.20x = 36,081,692,200.28
  5. Step 5: Solve for x
    x = 36,081,692,200.28/209,587.20
  6. Step 6: Final answer
    x = 172,155.99

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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.