Home / 100,035.72-138,084.06-57,611.16

Finding the Fourth Proportional to 100,035.72, 138,084.06 and 57,611.16

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Solution

The fourth proportional to 100,035.72, 138,084.06 and 57,611.16 is: 79,523.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,035.72 : 138,084.06 = 57,611.16 : x
  2. Step 2: Convert to fraction form
    100,035.72/138,084.06 = 57,611.16/x
  3. Step 3: Cross multiply
    100,035.72x = 138,084.06 × 57,611.16
  4. Step 4: Simplify right side
    100,035.72x = 7,955,182,874.11
  5. Step 5: Solve for x
    x = 7,955,182,874.11/100,035.72
  6. Step 6: Final answer
    x = 79,523.42

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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.