Home / 142,877.26-197,169.69-79,215.04

Finding the Fourth Proportional to 142,877.26, 197,169.69 and 79,215.04

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Solution

The fourth proportional to 142,877.26, 197,169.69 and 79,215.04 is: 109,316.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,877.26 : 197,169.69 = 79,215.04 : x
  2. Step 2: Convert to fraction form
    142,877.26/197,169.69 = 79,215.04/x
  3. Step 3: Cross multiply
    142,877.26x = 197,169.69 × 79,215.04
  4. Step 4: Simplify right side
    142,877.26x = 15,618,804,880.14
  5. Step 5: Solve for x
    x = 15,618,804,880.14/142,877.26
  6. Step 6: Final answer
    x = 109,316.24

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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.