Home / 100,391.08-138,519.84-59,547.64

Finding the Fourth Proportional to 100,391.08, 138,519.84 and 59,547.64

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Solution

The fourth proportional to 100,391.08, 138,519.84 and 59,547.64 is: 82,163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,391.08 : 138,519.84 = 59,547.64 : x
  2. Step 2: Convert to fraction form
    100,391.08/138,519.84 = 59,547.64/x
  3. Step 3: Cross multiply
    100,391.08x = 138,519.84 × 59,547.64
  4. Step 4: Simplify right side
    100,391.08x = 8,248,529,565.18
  5. Step 5: Solve for x
    x = 8,248,529,565.18/100,391.08
  6. Step 6: Final answer
    x = 82,163.97

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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.