Home / 138,535.02-191,178.45-74,872.89

Finding the Fourth Proportional to 138,535.02, 191,178.45 and 74,872.89

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Solution

The fourth proportional to 138,535.02, 191,178.45 and 74,872.89 is: 103,324.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,535.02 : 191,178.45 = 74,872.89 : x
  2. Step 2: Convert to fraction form
    138,535.02/191,178.45 = 74,872.89/x
  3. Step 3: Cross multiply
    138,535.02x = 191,178.45 × 74,872.89
  4. Step 4: Simplify right side
    138,535.02x = 14,314,083,057.22
  5. Step 5: Solve for x
    x = 14,314,083,057.22/138,535.02
  6. Step 6: Final answer
    x = 103,324.65

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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.