Home / 105,425.97-145,547.99-69,719.55

Finding the Fourth Proportional to 105,425.97, 145,547.99 and 69,719.55

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Solution

The fourth proportional to 105,425.97, 145,547.99 and 69,719.55 is: 96,252.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,425.97 : 145,547.99 = 69,719.55 : x
  2. Step 2: Convert to fraction form
    105,425.97/145,547.99 = 69,719.55/x
  3. Step 3: Cross multiply
    105,425.97x = 145,547.99 × 69,719.55
  4. Step 4: Simplify right side
    105,425.97x = 10,147,540,366.20
  5. Step 5: Solve for x
    x = 10,147,540,366.20/105,425.97
  6. Step 6: Final answer
    x = 96,252.76

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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.