Home / 103,619.10-155,659.05-99,702.30

Finding the Fourth Proportional to 103,619.10, 155,659.05 and 99,702.30

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Solution

The fourth proportional to 103,619.10, 155,659.05 and 99,702.30 is: 149,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.10 : 155,659.05 = 99,702.30 : x
  2. Step 2: Convert to fraction form
    103,619.10/155,659.05 = 99,702.30/x
  3. Step 3: Cross multiply
    103,619.10x = 155,659.05 × 99,702.30
  4. Step 4: Simplify right side
    103,619.10x = 15,519,565,300.82
  5. Step 5: Solve for x
    x = 15,519,565,300.82/103,619.10
  6. Step 6: Final answer
    x = 149,775.14

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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.