Home / 138,877.44-208,327.68-45,381.12

Finding the Fourth Proportional to 138,877.44, 208,327.68 and 45,381.12

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Solution

The fourth proportional to 138,877.44, 208,327.68 and 45,381.12 is: 68,075.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,877.44 : 208,327.68 = 45,381.12 : x
  2. Step 2: Convert to fraction form
    138,877.44/208,327.68 = 45,381.12/x
  3. Step 3: Cross multiply
    138,877.44x = 208,327.68 × 45,381.12
  4. Step 4: Simplify right side
    138,877.44x = 9,454,143,445.40
  5. Step 5: Solve for x
    x = 9,454,143,445.40/138,877.44
  6. Step 6: Final answer
    x = 68,075.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.