Home / 81,408,100.80-122,112,151.20-80,841,230.40

Finding the Fourth Proportional to 81,408,100.80, 122,112,151.20 and 80,841,230.40

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Solution

The fourth proportional to 81,408,100.80, 122,112,151.20 and 80,841,230.40 is: 121,261,845.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,408,100.80 : 122,112,151.20 = 80,841,230.40 : x
  2. Step 2: Convert to fraction form
    81,408,100.80/122,112,151.20 = 80,841,230.40/x
  3. Step 3: Cross multiply
    81,408,100.80x = 122,112,151.20 × 80,841,230.40
  4. Step 4: Simplify right side
    81,408,100.80x = 9,871,696,549,798,838
  5. Step 5: Solve for x
    x = 9,871,696,549,798,838/81,408,100.80
  6. Step 6: Final answer
    x = 121,261,845.60

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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.