Home / 81,873,065.40-122,809,598.10-75,176,908.80

Finding the Fourth Proportional to 81,873,065.40, 122,809,598.10 and 75,176,908.80

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Solution

The fourth proportional to 81,873,065.40, 122,809,598.10 and 75,176,908.80 is: 112,765,363.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,873,065.40 : 122,809,598.10 = 75,176,908.80 : x
  2. Step 2: Convert to fraction form
    81,873,065.40/122,809,598.10 = 75,176,908.80/x
  3. Step 3: Cross multiply
    81,873,065.40x = 122,809,598.10 × 75,176,908.80
  4. Step 4: Simplify right side
    81,873,065.40x = 9,232,445,956,128,352
  5. Step 5: Solve for x
    x = 9,232,445,956,128,352/81,873,065.40
  6. Step 6: Final answer
    x = 112,765,363.20

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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.