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Finding the Fourth Proportional to 99,603.80, 149,487.30 and 98,826.20

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Solution

The fourth proportional to 99,603.80, 149,487.30 and 98,826.20 is: 148,320.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,603.80 : 149,487.30 = 98,826.20 : x
  2. Step 2: Convert to fraction form
    99,603.80/149,487.30 = 98,826.20/x
  3. Step 3: Cross multiply
    99,603.80x = 149,487.30 × 98,826.20
  4. Step 4: Simplify right side
    99,603.80x = 14,773,261,807.26
  5. Step 5: Solve for x
    x = 14,773,261,807.26/99,603.80
  6. Step 6: Final answer
    x = 148,320.26

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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.