Home / 86,667,920.40-130,035,058.20-85,307,638.80

Finding the Fourth Proportional to 86,667,920.40, 130,035,058.20 and 85,307,638.80

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Solution

The fourth proportional to 86,667,920.40, 130,035,058.20 and 85,307,638.80 is: 127,994,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,667,920.40 : 130,035,058.20 = 85,307,638.80 : x
  2. Step 2: Convert to fraction form
    86,667,920.40/130,035,058.20 = 85,307,638.80/x
  3. Step 3: Cross multiply
    86,667,920.40x = 130,035,058.20 × 85,307,638.80
  4. Step 4: Simplify right side
    86,667,920.40x = 11,092,983,776,262,578
  5. Step 5: Solve for x
    x = 11,092,983,776,262,578/86,667,920.40
  6. Step 6: Final answer
    x = 127,994,115.07

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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.