Home / 103,702.23-143,153.19-69,730.43

Finding the Fourth Proportional to 103,702.23, 143,153.19 and 69,730.43

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Solution

The fourth proportional to 103,702.23, 143,153.19 and 69,730.43 is: 96,257.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,702.23 : 143,153.19 = 69,730.43 : x
  2. Step 2: Convert to fraction form
    103,702.23/143,153.19 = 69,730.43/x
  3. Step 3: Cross multiply
    103,702.23x = 143,153.19 × 69,730.43
  4. Step 4: Simplify right side
    103,702.23x = 9,982,132,778.81
  5. Step 5: Solve for x
    x = 9,982,132,778.81/103,702.23
  6. Step 6: Final answer
    x = 96,257.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.