Home / 91,521.19-126,234.12-83,991.84

Finding the Fourth Proportional to 91,521.19, 126,234.12 and 83,991.84

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Solution

The fourth proportional to 91,521.19, 126,234.12 and 83,991.84 is: 115,848.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,521.19 : 126,234.12 = 83,991.84 : x
  2. Step 2: Convert to fraction form
    91,521.19/126,234.12 = 83,991.84/x
  3. Step 3: Cross multiply
    91,521.19x = 126,234.12 × 83,991.84
  4. Step 4: Simplify right side
    91,521.19x = 10,602,636,009.58
  5. Step 5: Solve for x
    x = 10,602,636,009.58/91,521.19
  6. Step 6: Final answer
    x = 115,848.97

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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.