Home / 89,240.70-133,925.79-71,919.66

Finding the Fourth Proportional to 89,240.70, 133,925.79 and 71,919.66

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Solution

The fourth proportional to 89,240.70, 133,925.79 and 71,919.66 is: 107,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,240.70 : 133,925.79 = 71,919.66 : x
  2. Step 2: Convert to fraction form
    89,240.70/133,925.79 = 71,919.66/x
  3. Step 3: Cross multiply
    89,240.70x = 133,925.79 × 71,919.66
  4. Step 4: Simplify right side
    89,240.70x = 9,631,897,282.03
  5. Step 5: Solve for x
    x = 9,631,897,282.03/89,240.70
  6. Step 6: Final answer
    x = 107,931.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.