Home / 142,220.85-196,265.39-78,559.17

Finding the Fourth Proportional to 142,220.85, 196,265.39 and 78,559.17

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Solution

The fourth proportional to 142,220.85, 196,265.39 and 78,559.17 is: 108,412.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,220.85 : 196,265.39 = 78,559.17 : x
  2. Step 2: Convert to fraction form
    142,220.85/196,265.39 = 78,559.17/x
  3. Step 3: Cross multiply
    142,220.85x = 196,265.39 × 78,559.17
  4. Step 4: Simplify right side
    142,220.85x = 15,418,446,138.13
  5. Step 5: Solve for x
    x = 15,418,446,138.13/142,220.85
  6. Step 6: Final answer
    x = 108,412.00

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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.