Home / 102,117.30-153,003.15-67,038.90

Finding the Fourth Proportional to 102,117.30, 153,003.15 and 67,038.90

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Solution

The fourth proportional to 102,117.30, 153,003.15 and 67,038.90 is: 100,444.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,117.30 : 153,003.15 = 67,038.90 : x
  2. Step 2: Convert to fraction form
    102,117.30/153,003.15 = 67,038.90/x
  3. Step 3: Cross multiply
    102,117.30x = 153,003.15 × 67,038.90
  4. Step 4: Simplify right side
    102,117.30x = 10,257,162,872.54
  5. Step 5: Solve for x
    x = 10,257,162,872.54/102,117.30
  6. Step 6: Final answer
    x = 100,444.91

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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.