Home / 100,217.95-138,302.75-54,895.93

Finding the Fourth Proportional to 100,217.95, 138,302.75 and 54,895.93

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Solution

The fourth proportional to 100,217.95, 138,302.75 and 54,895.93 is: 75,757.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,217.95 : 138,302.75 = 54,895.93 : x
  2. Step 2: Convert to fraction form
    100,217.95/138,302.75 = 54,895.93/x
  3. Step 3: Cross multiply
    100,217.95x = 138,302.75 × 54,895.93
  4. Step 4: Simplify right side
    100,217.95x = 7,592,258,082.81
  5. Step 5: Solve for x
    x = 7,592,258,082.81/100,217.95
  6. Step 6: Final answer
    x = 75,757.47

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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.