Home / 142,652.46-196,860.36-78,990.24

Finding the Fourth Proportional to 142,652.46, 196,860.36 and 78,990.24

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Solution

The fourth proportional to 142,652.46, 196,860.36 and 78,990.24 is: 109,006.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,652.46 : 196,860.36 = 78,990.24 : x
  2. Step 2: Convert to fraction form
    142,652.46/196,860.36 = 78,990.24/x
  3. Step 3: Cross multiply
    142,652.46x = 196,860.36 × 78,990.24
  4. Step 4: Simplify right side
    142,652.46x = 15,550,047,082.89
  5. Step 5: Solve for x
    x = 15,550,047,082.89/142,652.46
  6. Step 6: Final answer
    x = 109,006.51

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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.