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Finding the Fourth Proportional to 174,763.31, 260,959.59 and 138,821.18

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Solution

The fourth proportional to 174,763.31, 260,959.59 and 138,821.18 is: 207,290.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,763.31 : 260,959.59 = 138,821.18 : x
  2. Step 2: Convert to fraction form
    174,763.31/260,959.59 = 138,821.18/x
  3. Step 3: Cross multiply
    174,763.31x = 260,959.59 × 138,821.18
  4. Step 4: Simplify right side
    174,763.31x = 36,226,716,911.32
  5. Step 5: Solve for x
    x = 36,226,716,911.32/174,763.31
  6. Step 6: Final answer
    x = 207,290.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.