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Finding the Fourth Proportional to 109,008.68, 150,445.42 and 61,261

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Solution

The fourth proportional to 109,008.68, 150,445.42 and 61,261 is: 84,547.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,008.68 : 150,445.42 = 61,261 : x
  2. Step 2: Convert to fraction form
    109,008.68/150,445.42 = 61,261/x
  3. Step 3: Cross multiply
    109,008.68x = 150,445.42 × 61,261
  4. Step 4: Simplify right side
    109,008.68x = 9,216,436,874.62
  5. Step 5: Solve for x
    x = 9,216,436,874.62/109,008.68
  6. Step 6: Final answer
    x = 84,547.73

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1.5x scale

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.