Home / 131,377.70-181,301.40-74,789

Finding the Fourth Proportional to 131,377.70, 181,301.40 and 74,789

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Solution

The fourth proportional to 131,377.70, 181,301.40 and 74,789 is: 103,208.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,377.70 : 181,301.40 = 74,789 : x
  2. Step 2: Convert to fraction form
    131,377.70/181,301.40 = 74,789/x
  3. Step 3: Cross multiply
    131,377.70x = 181,301.40 × 74,789
  4. Step 4: Simplify right side
    131,377.70x = 13,559,350,404.60
  5. Step 5: Solve for x
    x = 13,559,350,404.60/131,377.70
  6. Step 6: Final answer
    x = 103,208.92

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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.