Home / 99,668,107.20-149,502,160.80-45,815,419.20

Finding the Fourth Proportional to 99,668,107.20, 149,502,160.80 and 45,815,419.20

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Solution

The fourth proportional to 99,668,107.20, 149,502,160.80 and 45,815,419.20 is: 68,723,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,668,107.20 : 149,502,160.80 = 45,815,419.20 : x
  2. Step 2: Convert to fraction form
    99,668,107.20/149,502,160.80 = 45,815,419.20/x
  3. Step 3: Cross multiply
    99,668,107.20x = 149,502,160.80 × 45,815,419.20
  4. Step 4: Simplify right side
    99,668,107.20x = 6,849,504,168,357,808
  5. Step 5: Solve for x
    x = 6,849,504,168,357,808/99,668,107.20
  6. Step 6: Final answer
    x = 68,723,128.80

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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.