Home / 138,824.80-208,115.70-94,307.20

Finding the Fourth Proportional to 138,824.80, 208,115.70 and 94,307.20

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Solution

The fourth proportional to 138,824.80, 208,115.70 and 94,307.20 is: 141,378.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,824.80 : 208,115.70 = 94,307.20 : x
  2. Step 2: Convert to fraction form
    138,824.80/208,115.70 = 94,307.20/x
  3. Step 3: Cross multiply
    138,824.80x = 208,115.70 × 94,307.20
  4. Step 4: Simplify right side
    138,824.80x = 19,626,808,943.04
  5. Step 5: Solve for x
    x = 19,626,808,943.04/138,824.80
  6. Step 6: Final answer
    x = 141,378.26

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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.