Home / 142,220.91-196,260.39-77,689.11

Finding the Fourth Proportional to 142,220.91, 196,260.39 and 77,689.11

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Solution

The fourth proportional to 142,220.91, 196,260.39 and 77,689.11 is: 107,208.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,220.91 : 196,260.39 = 77,689.11 : x
  2. Step 2: Convert to fraction form
    142,220.91/196,260.39 = 77,689.11/x
  3. Step 3: Cross multiply
    142,220.91x = 196,260.39 × 77,689.11
  4. Step 4: Simplify right side
    142,220.91x = 15,247,295,027.35
  5. Step 5: Solve for x
    x = 15,247,295,027.35/142,220.91
  6. Step 6: Final answer
    x = 107,208.53

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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.