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Finding the Fourth Proportional to 142,603.74, 196,706.88 and 91,599.12

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Solution

The fourth proportional to 142,603.74, 196,706.88 and 91,599.12 is: 126,351.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,603.74 : 196,706.88 = 91,599.12 : x
  2. Step 2: Convert to fraction form
    142,603.74/196,706.88 = 91,599.12/x
  3. Step 3: Cross multiply
    142,603.74x = 196,706.88 × 91,599.12
  4. Step 4: Simplify right side
    142,603.74x = 18,018,177,105.95
  5. Step 5: Solve for x
    x = 18,018,177,105.95/142,603.74
  6. Step 6: Final answer
    x = 126,351.36

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1.5x scale

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.