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Finding the Fourth Proportional to 131,798.70, 181,885.26 and 75,215.34

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Solution

The fourth proportional to 131,798.70, 181,885.26 and 75,215.34 is: 103,798.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,798.70 : 181,885.26 = 75,215.34 : x
  2. Step 2: Convert to fraction form
    131,798.70/181,885.26 = 75,215.34/x
  3. Step 3: Cross multiply
    131,798.70x = 181,885.26 × 75,215.34
  4. Step 4: Simplify right side
    131,798.70x = 13,680,561,671.89
  5. Step 5: Solve for x
    x = 13,680,561,671.89/131,798.70
  6. Step 6: Final answer
    x = 103,798.91

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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.