Home / 100,787,471.82-139,012,453.98-76,008,702.92

Finding the Fourth Proportional to 100,787,471.82, 139,012,453.98 and 76,008,702.92

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Solution

The fourth proportional to 100,787,471.82, 139,012,453.98 and 76,008,702.92 is: 104,836,009.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,787,471.82 : 139,012,453.98 = 76,008,702.92 : x
  2. Step 2: Convert to fraction form
    100,787,471.82/139,012,453.98 = 76,008,702.92/x
  3. Step 3: Cross multiply
    100,787,471.82x = 139,012,453.98 × 76,008,702.92
  4. Step 4: Simplify right side
    100,787,471.82x = 10,566,156,316,050,930
  5. Step 5: Solve for x
    x = 10,566,156,316,050,930/100,787,471.82
  6. Step 6: Final answer
    x = 104,836,009.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.