Home / 155,993,130.90-215,267,890.41-86,377,016.70

Finding the Fourth Proportional to 155,993,130.90, 215,267,890.41 and 86,377,016.70

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Solution

The fourth proportional to 155,993,130.90, 215,267,890.41 and 86,377,016.70 is: 119,198,826.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,993,130.90 : 215,267,890.41 = 86,377,016.70 : x
  2. Step 2: Convert to fraction form
    155,993,130.90/215,267,890.41 = 86,377,016.70/x
  3. Step 3: Cross multiply
    155,993,130.90x = 215,267,890.41 × 86,377,016.70
  4. Step 4: Simplify right side
    155,993,130.90x = 18,594,198,164,918,340
  5. Step 5: Solve for x
    x = 18,594,198,164,918,340/155,993,130.90
  6. Step 6: Final answer
    x = 119,198,826.63

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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.