Home / 80,971,289.60-121,456,934.40-73,161,075.20

Finding the Fourth Proportional to 80,971,289.60, 121,456,934.40 and 73,161,075.20

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Solution

The fourth proportional to 80,971,289.60, 121,456,934.40 and 73,161,075.20 is: 109,741,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,971,289.60 : 121,456,934.40 = 73,161,075.20 : x
  2. Step 2: Convert to fraction form
    80,971,289.60/121,456,934.40 = 73,161,075.20/x
  3. Step 3: Cross multiply
    80,971,289.60x = 121,456,934.40 × 73,161,075.20
  4. Step 4: Simplify right side
    80,971,289.60x = 8,885,919,911,199,868
  5. Step 5: Solve for x
    x = 8,885,919,911,199,868/80,971,289.60
  6. Step 6: Final answer
    x = 109,741,612.80

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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.