Home / 91,998.18-126,979.84-56,218.32

Finding the Fourth Proportional to 91,998.18, 126,979.84 and 56,218.32

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Solution

The fourth proportional to 91,998.18, 126,979.84 and 56,218.32 is: 77,594.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,998.18 : 126,979.84 = 56,218.32 : x
  2. Step 2: Convert to fraction form
    91,998.18/126,979.84 = 56,218.32/x
  3. Step 3: Cross multiply
    91,998.18x = 126,979.84 × 56,218.32
  4. Step 4: Simplify right side
    91,998.18x = 7,138,593,278.67
  5. Step 5: Solve for x
    x = 7,138,593,278.67/91,998.18
  6. Step 6: Final answer
    x = 77,594.94

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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.