Home / 142,904.16-197,272.80-91,941.12

Finding the Fourth Proportional to 142,904.16, 197,272.80 and 91,941.12

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Solution

The fourth proportional to 142,904.16, 197,272.80 and 91,941.12 is: 126,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,904.16 : 197,272.80 = 91,941.12 : x
  2. Step 2: Convert to fraction form
    142,904.16/197,272.80 = 91,941.12/x
  3. Step 3: Cross multiply
    142,904.16x = 197,272.80 × 91,941.12
  4. Step 4: Simplify right side
    142,904.16x = 18,137,482,177.54
  5. Step 5: Solve for x
    x = 18,137,482,177.54/142,904.16
  6. Step 6: Final answer
    x = 126,920.60

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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.