Home / 142,125.89-196,132.46-78,462.32

Finding the Fourth Proportional to 142,125.89, 196,132.46 and 78,462.32

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Solution

The fourth proportional to 142,125.89, 196,132.46 and 78,462.32 is: 108,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,125.89 : 196,132.46 = 78,462.32 : x
  2. Step 2: Convert to fraction form
    142,125.89/196,132.46 = 78,462.32/x
  3. Step 3: Cross multiply
    142,125.89x = 196,132.46 × 78,462.32
  4. Step 4: Simplify right side
    142,125.89x = 15,389,006,465.93
  5. Step 5: Solve for x
    x = 15,389,006,465.93/142,125.89
  6. Step 6: Final answer
    x = 108,277.30

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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.