Home / 99,566,581.60-149,338,813.20-81,584,322.40

Finding the Fourth Proportional to 99,566,581.60, 149,338,813.20 and 81,584,322.40

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Solution

The fourth proportional to 99,566,581.60, 149,338,813.20 and 81,584,322.40 is: 122,367,421.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,566,581.60 : 149,338,813.20 = 81,584,322.40 : x
  2. Step 2: Convert to fraction form
    99,566,581.60/149,338,813.20 = 81,584,322.40/x
  3. Step 3: Cross multiply
    99,566,581.60x = 149,338,813.20 × 81,584,322.40
  4. Step 4: Simplify right side
    99,566,581.60x = 12,183,705,882,942,176
  5. Step 5: Solve for x
    x = 12,183,705,882,942,176/99,566,581.60
  6. Step 6: Final answer
    x = 122,367,421.75

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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.