Home / 91,521.72-126,234.84-83,992.36

Finding the Fourth Proportional to 91,521.72, 126,234.84 and 83,992.36

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Solution

The fourth proportional to 91,521.72, 126,234.84 and 83,992.36 is: 115,849.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,521.72 : 126,234.84 = 83,992.36 : x
  2. Step 2: Convert to fraction form
    91,521.72/126,234.84 = 83,992.36/x
  3. Step 3: Cross multiply
    91,521.72x = 126,234.84 × 83,992.36
  4. Step 4: Simplify right side
    91,521.72x = 10,602,762,125.82
  5. Step 5: Solve for x
    x = 10,602,762,125.82/91,521.72
  6. Step 6: Final answer
    x = 115,849.68

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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.