Home / 131,680,017.54-181,718,361-78,756,724.28

Finding the Fourth Proportional to 131,680,017.54, 181,718,361 and 78,756,724.28

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Solution

The fourth proportional to 131,680,017.54, 181,718,361 and 78,756,724.28 is: 108,684,241.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,680,017.54 : 181,718,361 = 78,756,724.28 : x
  2. Step 2: Convert to fraction form
    131,680,017.54/181,718,361 = 78,756,724.28/x
  3. Step 3: Cross multiply
    131,680,017.54x = 181,718,361 × 78,756,724.28
  4. Step 4: Simplify right side
    131,680,017.54x = 14,311,542,853,890,506
  5. Step 5: Solve for x
    x = 14,311,542,853,890,506/131,680,017.54
  6. Step 6: Final answer
    x = 108,684,241.70

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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.