Home / 112,704.08-155,531.90-61,720.16

Finding the Fourth Proportional to 112,704.08, 155,531.90 and 61,720.16

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Solution

The fourth proportional to 112,704.08, 155,531.90 and 61,720.16 is: 85,173.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,704.08 : 155,531.90 = 61,720.16 : x
  2. Step 2: Convert to fraction form
    112,704.08/155,531.90 = 61,720.16/x
  3. Step 3: Cross multiply
    112,704.08x = 155,531.90 × 61,720.16
  4. Step 4: Simplify right side
    112,704.08x = 9,599,453,753.10
  5. Step 5: Solve for x
    x = 9,599,453,753.10/112,704.08
  6. Step 6: Final answer
    x = 85,173.97

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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.