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Finding the Fourth Proportional to 177,615.30, 266,422.95 and 128,043.30

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Solution

The fourth proportional to 177,615.30, 266,422.95 and 128,043.30 is: 192,064.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,615.30 : 266,422.95 = 128,043.30 : x
  2. Step 2: Convert to fraction form
    177,615.30/266,422.95 = 128,043.30/x
  3. Step 3: Cross multiply
    177,615.30x = 266,422.95 × 128,043.30
  4. Step 4: Simplify right side
    177,615.30x = 34,113,673,713.74
  5. Step 5: Solve for x
    x = 34,113,673,713.74/177,615.30
  6. Step 6: Final answer
    x = 192,064.95

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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.