Home / 100,557.56-138,761.34-58,118.84

Finding the Fourth Proportional to 100,557.56, 138,761.34 and 58,118.84

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Solution

The fourth proportional to 100,557.56, 138,761.34 and 58,118.84 is: 80,199.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,557.56 : 138,761.34 = 58,118.84 : x
  2. Step 2: Convert to fraction form
    100,557.56/138,761.34 = 58,118.84/x
  3. Step 3: Cross multiply
    100,557.56x = 138,761.34 × 58,118.84
  4. Step 4: Simplify right side
    100,557.56x = 8,064,648,117.65
  5. Step 5: Solve for x
    x = 8,064,648,117.65/100,557.56
  6. Step 6: Final answer
    x = 80,199.32

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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.