Home / 142,219.72-196,263.30-78,560.20

Finding the Fourth Proportional to 142,219.72, 196,263.30 and 78,560.20

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Solution

The fourth proportional to 142,219.72, 196,263.30 and 78,560.20 is: 108,413.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,219.72 : 196,263.30 = 78,560.20 : x
  2. Step 2: Convert to fraction form
    142,219.72/196,263.30 = 78,560.20/x
  3. Step 3: Cross multiply
    142,219.72x = 196,263.30 × 78,560.20
  4. Step 4: Simplify right side
    142,219.72x = 15,418,484,100.66
  5. Step 5: Solve for x
    x = 15,418,484,100.66/142,219.72
  6. Step 6: Final answer
    x = 108,413.12

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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.