Home / 78,678,190.26-118,008,206.88-21,165,941.70

Finding the Fourth Proportional to 78,678,190.26, 118,008,206.88 and 21,165,941.70

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Solution

The fourth proportional to 78,678,190.26, 118,008,206.88 and 21,165,941.70 is: 31,746,470.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,678,190.26 : 118,008,206.88 = 21,165,941.70 : x
  2. Step 2: Convert to fraction form
    78,678,190.26/118,008,206.88 = 21,165,941.70/x
  3. Step 3: Cross multiply
    78,678,190.26x = 118,008,206.88 × 21,165,941.70
  4. Step 4: Simplify right side
    78,678,190.26x = 2,497,754,826,943,618.50
  5. Step 5: Solve for x
    x = 2,497,754,826,943,618.50/78,678,190.26
  6. Step 6: Final answer
    x = 31,746,470.26

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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.