Home / 142,925.75-197,241.26-78,397.80

Finding the Fourth Proportional to 142,925.75, 197,241.26 and 78,397.80

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Solution

The fourth proportional to 142,925.75, 197,241.26 and 78,397.80 is: 108,191.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,925.75 : 197,241.26 = 78,397.80 : x
  2. Step 2: Convert to fraction form
    142,925.75/197,241.26 = 78,397.80/x
  3. Step 3: Cross multiply
    142,925.75x = 197,241.26 × 78,397.80
  4. Step 4: Simplify right side
    142,925.75x = 15,463,280,551.94
  5. Step 5: Solve for x
    x = 15,463,280,551.94/142,925.75
  6. Step 6: Final answer
    x = 108,191.01

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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.