Home / 125,209,568.06-187,814,357.93-85,778,939.78

Finding the Fourth Proportional to 125,209,568.06, 187,814,357.93 and 85,778,939.78

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Solution

The fourth proportional to 125,209,568.06, 187,814,357.93 and 85,778,939.78 is: 128,668,413.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,209,568.06 : 187,814,357.93 = 85,778,939.78 : x
  2. Step 2: Convert to fraction form
    125,209,568.06/187,814,357.93 = 85,778,939.78/x
  3. Step 3: Cross multiply
    125,209,568.06x = 187,814,357.93 × 85,778,939.78
  4. Step 4: Simplify right side
    125,209,568.06x = 16,110,516,497,650,542
  5. Step 5: Solve for x
    x = 16,110,516,497,650,542/125,209,568.06
  6. Step 6: Final answer
    x = 128,668,413.66

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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.