Home / 103,195.93-142,416.18-77,656.33

Finding the Fourth Proportional to 103,195.93, 142,416.18 and 77,656.33

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Solution

The fourth proportional to 103,195.93, 142,416.18 and 77,656.33 is: 107,170.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,195.93 : 142,416.18 = 77,656.33 : x
  2. Step 2: Convert to fraction form
    103,195.93/142,416.18 = 77,656.33/x
  3. Step 3: Cross multiply
    103,195.93x = 142,416.18 × 77,656.33
  4. Step 4: Simplify right side
    103,195.93x = 11,059,517,871.42
  5. Step 5: Solve for x
    x = 11,059,517,871.42/103,195.93
  6. Step 6: Final answer
    x = 107,170.10

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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.