Home / 109,519.25-164,278.88-42,990.71

Finding the Fourth Proportional to 109,519.25, 164,278.88 and 42,990.71

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Solution

The fourth proportional to 109,519.25, 164,278.88 and 42,990.71 is: 64,486.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,519.25 : 164,278.88 = 42,990.71 : x
  2. Step 2: Convert to fraction form
    109,519.25/164,278.88 = 42,990.71/x
  3. Step 3: Cross multiply
    109,519.25x = 164,278.88 × 42,990.71
  4. Step 4: Simplify right side
    109,519.25x = 7,062,465,689.20
  5. Step 5: Solve for x
    x = 7,062,465,689.20/109,519.25
  6. Step 6: Final answer
    x = 64,486.07

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1.5x scale

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.