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Finding the Fourth Proportional to 101,988.97, 153,011.13 and 30,908.74

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Solution

The fourth proportional to 101,988.97, 153,011.13 and 30,908.74 is: 46,371.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,988.97 : 153,011.13 = 30,908.74 : x
  2. Step 2: Convert to fraction form
    101,988.97/153,011.13 = 30,908.74/x
  3. Step 3: Cross multiply
    101,988.97x = 153,011.13 × 30,908.74
  4. Step 4: Simplify right side
    101,988.97x = 4,729,381,234.28
  5. Step 5: Solve for x
    x = 4,729,381,234.28/101,988.97
  6. Step 6: Final answer
    x = 46,371.50

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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.