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Finding the Fourth Proportional to 99,855,801.60, 149,783,702.40 and 65,843,577.60

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Solution

The fourth proportional to 99,855,801.60, 149,783,702.40 and 65,843,577.60 is: 98,765,366.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,855,801.60 : 149,783,702.40 = 65,843,577.60 : x
  2. Step 2: Convert to fraction form
    99,855,801.60/149,783,702.40 = 65,843,577.60/x
  3. Step 3: Cross multiply
    99,855,801.60x = 149,783,702.40 × 65,843,577.60
  4. Step 4: Simplify right side
    99,855,801.60x = 9,862,294,832,189,706
  5. Step 5: Solve for x
    x = 9,862,294,832,189,706/99,855,801.60
  6. Step 6: Final answer
    x = 98,765,366.40

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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.