Home / 99,290,667.20-148,936,000.80-68,679,665.60

Finding the Fourth Proportional to 99,290,667.20, 148,936,000.80 and 68,679,665.60

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Solution

The fourth proportional to 99,290,667.20, 148,936,000.80 and 68,679,665.60 is: 103,019,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,290,667.20 : 148,936,000.80 = 68,679,665.60 : x
  2. Step 2: Convert to fraction form
    99,290,667.20/148,936,000.80 = 68,679,665.60/x
  3. Step 3: Cross multiply
    99,290,667.20x = 148,936,000.80 × 68,679,665.60
  4. Step 4: Simplify right side
    99,290,667.20x = 10,228,874,730,745,332
  5. Step 5: Solve for x
    x = 10,228,874,730,745,332/99,290,667.20
  6. Step 6: Final answer
    x = 103,019,498.40

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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.