Home / 89,150,712.40-133,726,068.60-81,214,526.80

Finding the Fourth Proportional to 89,150,712.40, 133,726,068.60 and 81,214,526.80

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Solution

The fourth proportional to 89,150,712.40, 133,726,068.60 and 81,214,526.80 is: 121,821,790.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,150,712.40 : 133,726,068.60 = 81,214,526.80 : x
  2. Step 2: Convert to fraction form
    89,150,712.40/133,726,068.60 = 81,214,526.80/x
  3. Step 3: Cross multiply
    89,150,712.40x = 133,726,068.60 × 81,214,526.80
  4. Step 4: Simplify right side
    89,150,712.40x = 10,860,499,382,173,338
  5. Step 5: Solve for x
    x = 10,860,499,382,173,338/89,150,712.40
  6. Step 6: Final answer
    x = 121,821,790.20

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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.