Home / 99,870,962.40-149,806,443.60-69,612,991.20

Finding the Fourth Proportional to 99,870,962.40, 149,806,443.60 and 69,612,991.20

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Solution

The fourth proportional to 99,870,962.40, 149,806,443.60 and 69,612,991.20 is: 104,419,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,870,962.40 : 149,806,443.60 = 69,612,991.20 : x
  2. Step 2: Convert to fraction form
    99,870,962.40/149,806,443.60 = 69,612,991.20/x
  3. Step 3: Cross multiply
    99,870,962.40x = 149,806,443.60 × 69,612,991.20
  4. Step 4: Simplify right side
    99,870,962.40x = 10,428,474,640,030,096
  5. Step 5: Solve for x
    x = 10,428,474,640,030,096/99,870,962.40
  6. Step 6: Final answer
    x = 104,419,486.80

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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.