Home / 123,521.28-170,372.64-75,797.76

Finding the Fourth Proportional to 123,521.28, 170,372.64 and 75,797.76

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Solution

The fourth proportional to 123,521.28, 170,372.64 and 75,797.76 is: 104,547.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,521.28 : 170,372.64 = 75,797.76 : x
  2. Step 2: Convert to fraction form
    123,521.28/170,372.64 = 75,797.76/x
  3. Step 3: Cross multiply
    123,521.28x = 170,372.64 × 75,797.76
  4. Step 4: Simplify right side
    123,521.28x = 12,913,864,477.29
  5. Step 5: Solve for x
    x = 12,913,864,477.29/123,521.28
  6. Step 6: Final answer
    x = 104,547.69

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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.