Home / 89,688,738.40-134,533,107.60-81,752,552.80

Finding the Fourth Proportional to 89,688,738.40, 134,533,107.60 and 81,752,552.80

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Solution

The fourth proportional to 89,688,738.40, 134,533,107.60 and 81,752,552.80 is: 122,628,829.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,688,738.40 : 134,533,107.60 = 81,752,552.80 : x
  2. Step 2: Convert to fraction form
    89,688,738.40/134,533,107.60 = 81,752,552.80/x
  3. Step 3: Cross multiply
    89,688,738.40x = 134,533,107.60 × 81,752,552.80
  4. Step 4: Simplify right side
    89,688,738.40x = 10,998,424,982,417,080
  5. Step 5: Solve for x
    x = 10,998,424,982,417,080/89,688,738.40
  6. Step 6: Final answer
    x = 122,628,829.20

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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.