Home / 142,607.76-196,712.40-91,603.12

Finding the Fourth Proportional to 142,607.76, 196,712.40 and 91,603.12

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Solution

The fourth proportional to 142,607.76, 196,712.40 and 91,603.12 is: 126,356.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,607.76 : 196,712.40 = 91,603.12 : x
  2. Step 2: Convert to fraction form
    142,607.76/196,712.40 = 91,603.12/x
  3. Step 3: Cross multiply
    142,607.76x = 196,712.40 × 91,603.12
  4. Step 4: Simplify right side
    142,607.76x = 18,019,469,582.69
  5. Step 5: Solve for x
    x = 18,019,469,582.69/142,607.76
  6. Step 6: Final answer
    x = 126,356.87

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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.