Home / 123,605,998.80-185,408,998.20-75,178,820.40

Finding the Fourth Proportional to 123,605,998.80, 185,408,998.20 and 75,178,820.40

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Solution

The fourth proportional to 123,605,998.80, 185,408,998.20 and 75,178,820.40 is: 112,768,230.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,605,998.80 : 185,408,998.20 = 75,178,820.40 : x
  2. Step 2: Convert to fraction form
    123,605,998.80/185,408,998.20 = 75,178,820.40/x
  3. Step 3: Cross multiply
    123,605,998.80x = 185,408,998.20 × 75,178,820.40
  4. Step 4: Simplify right side
    123,605,998.80x = 13,938,829,776,221,724
  5. Step 5: Solve for x
    x = 13,938,829,776,221,724/123,605,998.80
  6. Step 6: Final answer
    x = 112,768,230.60

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1.5x scale

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.