Home / 84,381,237.18-127,204,309.22-78,756,578.01

Finding the Fourth Proportional to 84,381,237.18, 127,204,309.22 and 78,756,578.01

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Solution

The fourth proportional to 84,381,237.18, 127,204,309.22 and 78,756,578.01 is: 118,725,162.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,381,237.18 : 127,204,309.22 = 78,756,578.01 : x
  2. Step 2: Convert to fraction form
    84,381,237.18/127,204,309.22 = 78,756,578.01/x
  3. Step 3: Cross multiply
    84,381,237.18x = 127,204,309.22 × 78,756,578.01
  4. Step 4: Simplify right side
    84,381,237.18x = 10,018,176,101,899,310
  5. Step 5: Solve for x
    x = 10,018,176,101,899,310/84,381,237.18
  6. Step 6: Final answer
    x = 118,725,162.57

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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.