Home / 100,176.23-138,246.49-54,856.12

Finding the Fourth Proportional to 100,176.23, 138,246.49 and 54,856.12

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Solution

The fourth proportional to 100,176.23, 138,246.49 and 54,856.12 is: 75,703.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,176.23 : 138,246.49 = 54,856.12 : x
  2. Step 2: Convert to fraction form
    100,176.23/138,246.49 = 54,856.12/x
  3. Step 3: Cross multiply
    100,176.23x = 138,246.49 × 54,856.12
  4. Step 4: Simplify right side
    100,176.23x = 7,583,666,045.02
  5. Step 5: Solve for x
    x = 7,583,666,045.02/100,176.23
  6. Step 6: Final answer
    x = 75,703.25

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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.