Home / 86,667,912.40-130,035,046.20-85,307,630.80

Finding the Fourth Proportional to 86,667,912.40, 130,035,046.20 and 85,307,630.80

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Solution

The fourth proportional to 86,667,912.40, 130,035,046.20 and 85,307,630.80 is: 127,994,103.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,667,912.40 : 130,035,046.20 = 85,307,630.80 : x
  2. Step 2: Convert to fraction form
    86,667,912.40/130,035,046.20 = 85,307,630.80/x
  3. Step 3: Cross multiply
    86,667,912.40x = 130,035,046.20 × 85,307,630.80
  4. Step 4: Simplify right side
    86,667,912.40x = 11,092,981,712,290,542
  5. Step 5: Solve for x
    x = 11,092,981,712,290,542/86,667,912.40
  6. Step 6: Final answer
    x = 127,994,103.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.