Home / 84,381,126.89-127,204,143-78,756,468.17

Finding the Fourth Proportional to 84,381,126.89, 127,204,143 and 78,756,468.17

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Solution

The fourth proportional to 84,381,126.89, 127,204,143 and 78,756,468.17 is: 118,724,997.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,381,126.89 : 127,204,143 = 78,756,468.17 : x
  2. Step 2: Convert to fraction form
    84,381,126.89/127,204,143 = 78,756,468.17/x
  3. Step 3: Cross multiply
    84,381,126.89x = 127,204,143 × 78,756,468.17
  4. Step 4: Simplify right side
    84,381,126.89x = 10,018,149,038,635,608
  5. Step 5: Solve for x
    x = 10,018,149,038,635,608/84,381,126.89
  6. Step 6: Final answer
    x = 118,724,997.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.