Home / 100,003.14-149,122.52-99,103.04

Finding the Fourth Proportional to 100,003.14, 149,122.52 and 99,103.04

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Solution

The fourth proportional to 100,003.14, 149,122.52 and 99,103.04 is: 147,780.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,003.14 : 149,122.52 = 99,103.04 : x
  2. Step 2: Convert to fraction form
    100,003.14/149,122.52 = 99,103.04/x
  3. Step 3: Cross multiply
    100,003.14x = 149,122.52 × 99,103.04
  4. Step 4: Simplify right side
    100,003.14x = 14,778,495,064.46
  5. Step 5: Solve for x
    x = 14,778,495,064.46/100,003.14
  6. Step 6: Final answer
    x = 147,780.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.