Home / 142,627.12-196,811.79-85,255.04

Finding the Fourth Proportional to 142,627.12, 196,811.79 and 85,255.04

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Solution

The fourth proportional to 142,627.12, 196,811.79 and 85,255.04 is: 117,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,627.12 : 196,811.79 = 85,255.04 : x
  2. Step 2: Convert to fraction form
    142,627.12/196,811.79 = 85,255.04/x
  3. Step 3: Cross multiply
    142,627.12x = 196,811.79 × 85,255.04
  4. Step 4: Simplify right side
    142,627.12x = 16,779,197,028.92
  5. Step 5: Solve for x
    x = 16,779,197,028.92/142,627.12
  6. Step 6: Final answer
    x = 117,643.80

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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.