Home / 99,661,812.90-149,209,284.15-76,798,040.10

Finding the Fourth Proportional to 99,661,812.90, 149,209,284.15 and 76,798,040.10

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Solution

The fourth proportional to 99,661,812.90, 149,209,284.15 and 76,798,040.10 is: 114,978,648.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,661,812.90 : 149,209,284.15 = 76,798,040.10 : x
  2. Step 2: Convert to fraction form
    99,661,812.90/149,209,284.15 = 76,798,040.10/x
  3. Step 3: Cross multiply
    99,661,812.90x = 149,209,284.15 × 76,798,040.10
  4. Step 4: Simplify right side
    99,661,812.90x = 11,458,980,587,443,994
  5. Step 5: Solve for x
    x = 11,458,980,587,443,994/99,661,812.90
  6. Step 6: Final answer
    x = 114,978,648.83

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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.