Home / 125,209,569.06-187,814,359.43-85,778,940.78

Finding the Fourth Proportional to 125,209,569.06, 187,814,359.43 and 85,778,940.78

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Solution

The fourth proportional to 125,209,569.06, 187,814,359.43 and 85,778,940.78 is: 128,668,415.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,209,569.06 : 187,814,359.43 = 85,778,940.78 : x
  2. Step 2: Convert to fraction form
    125,209,569.06/187,814,359.43 = 85,778,940.78/x
  3. Step 3: Cross multiply
    125,209,569.06x = 187,814,359.43 × 85,778,940.78
  4. Step 4: Simplify right side
    125,209,569.06x = 16,110,516,815,179,606
  5. Step 5: Solve for x
    x = 16,110,516,815,179,606/125,209,569.06
  6. Step 6: Final answer
    x = 128,668,415.17

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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.