Home / 99,019.80-136,644.30-70,772.76

Finding the Fourth Proportional to 99,019.80, 136,644.30 and 70,772.76

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Solution

The fourth proportional to 99,019.80, 136,644.30 and 70,772.76 is: 97,664.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,019.80 : 136,644.30 = 70,772.76 : x
  2. Step 2: Convert to fraction form
    99,019.80/136,644.30 = 70,772.76/x
  3. Step 3: Cross multiply
    99,019.80x = 136,644.30 × 70,772.76
  4. Step 4: Simplify right side
    99,019.80x = 9,670,694,249.27
  5. Step 5: Solve for x
    x = 9,670,694,249.27/99,019.80
  6. Step 6: Final answer
    x = 97,664.25

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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.