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Finding the Fourth Proportional to 153,959.70, 230,939.55 and 131,409.30

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Solution

The fourth proportional to 153,959.70, 230,939.55 and 131,409.30 is: 197,113.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,959.70 : 230,939.55 = 131,409.30 : x
  2. Step 2: Convert to fraction form
    153,959.70/230,939.55 = 131,409.30/x
  3. Step 3: Cross multiply
    153,959.70x = 230,939.55 × 131,409.30
  4. Step 4: Simplify right side
    153,959.70x = 30,347,604,607.82
  5. Step 5: Solve for x
    x = 30,347,604,607.82/153,959.70
  6. Step 6: Final answer
    x = 197,113.95

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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.