Home / 99,778,712.40-149,584,087.80-51,909,656.40

Finding the Fourth Proportional to 99,778,712.40, 149,584,087.80 and 51,909,656.40

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Solution

The fourth proportional to 99,778,712.40, 149,584,087.80 and 51,909,656.40 is: 77,820,793.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,778,712.40 : 149,584,087.80 = 51,909,656.40 : x
  2. Step 2: Convert to fraction form
    99,778,712.40/149,584,087.80 = 51,909,656.40/x
  3. Step 3: Cross multiply
    99,778,712.40x = 149,584,087.80 × 51,909,656.40
  4. Step 4: Simplify right side
    99,778,712.40x = 7,764,858,600,605,432
  5. Step 5: Solve for x
    x = 7,764,858,600,605,432/99,778,712.40
  6. Step 6: Final answer
    x = 77,820,793.77

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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.