Home / 128,241.38-176,967.60-70,877.73

Finding the Fourth Proportional to 128,241.38, 176,967.60 and 70,877.73

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Solution

The fourth proportional to 128,241.38, 176,967.60 and 70,877.73 is: 97,808.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,241.38 : 176,967.60 = 70,877.73 : x
  2. Step 2: Convert to fraction form
    128,241.38/176,967.60 = 70,877.73/x
  3. Step 3: Cross multiply
    128,241.38x = 176,967.60 × 70,877.73
  4. Step 4: Simplify right side
    128,241.38x = 12,543,061,771.55
  5. Step 5: Solve for x
    x = 12,543,061,771.55/128,241.38
  6. Step 6: Final answer
    x = 97,808.23

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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.