Home / 141,947,870.80-212,921,806.20-80,513,291.20

Finding the Fourth Proportional to 141,947,870.80, 212,921,806.20 and 80,513,291.20

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Solution

The fourth proportional to 141,947,870.80, 212,921,806.20 and 80,513,291.20 is: 120,769,936.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,947,870.80 : 212,921,806.20 = 80,513,291.20 : x
  2. Step 2: Convert to fraction form
    141,947,870.80/212,921,806.20 = 80,513,291.20/x
  3. Step 3: Cross multiply
    141,947,870.80x = 212,921,806.20 × 80,513,291.20
  4. Step 4: Simplify right side
    141,947,870.80x = 17,143,035,385,410,566
  5. Step 5: Solve for x
    x = 17,143,035,385,410,566/141,947,870.80
  6. Step 6: Final answer
    x = 120,769,936.80

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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.