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Finding the Fourth Proportional to 153,943.95, 231,153.53 and 83,959.95

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Solution

The fourth proportional to 153,943.95, 231,153.53 and 83,959.95 is: 126,069.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,943.95 : 231,153.53 = 83,959.95 : x
  2. Step 2: Convert to fraction form
    153,943.95/231,153.53 = 83,959.95/x
  3. Step 3: Cross multiply
    153,943.95x = 231,153.53 × 83,959.95
  4. Step 4: Simplify right side
    153,943.95x = 19,407,638,401.32
  5. Step 5: Solve for x
    x = 19,407,638,401.32/153,943.95
  6. Step 6: Final answer
    x = 126,069.51

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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.