Home / 207,147.35-285,902.57-129,658.93

Finding the Fourth Proportional to 207,147.35, 285,902.57 and 129,658.93

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Solution

The fourth proportional to 207,147.35, 285,902.57 and 129,658.93 is: 178,953.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,147.35 : 285,902.57 = 129,658.93 : x
  2. Step 2: Convert to fraction form
    207,147.35/285,902.57 = 129,658.93/x
  3. Step 3: Cross multiply
    207,147.35x = 285,902.57 × 129,658.93
  4. Step 4: Simplify right side
    207,147.35x = 37,069,820,919.84
  5. Step 5: Solve for x
    x = 37,069,820,919.84/207,147.35
  6. Step 6: Final answer
    x = 178,953.87

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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.