Home / 109,981.29-151,589.16-84,130.95

Finding the Fourth Proportional to 109,981.29, 151,589.16 and 84,130.95

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Solution

The fourth proportional to 109,981.29, 151,589.16 and 84,130.95 is: 115,959.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,981.29 : 151,589.16 = 84,130.95 : x
  2. Step 2: Convert to fraction form
    109,981.29/151,589.16 = 84,130.95/x
  3. Step 3: Cross multiply
    109,981.29x = 151,589.16 × 84,130.95
  4. Step 4: Simplify right side
    109,981.29x = 12,753,340,040.50
  5. Step 5: Solve for x
    x = 12,753,340,040.50/109,981.29
  6. Step 6: Final answer
    x = 115,959.18

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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.