Home / 123,390.28-170,284.02-69,675.76

Finding the Fourth Proportional to 123,390.28, 170,284.02 and 69,675.76

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Solution

The fourth proportional to 123,390.28, 170,284.02 and 69,675.76 is: 96,155.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,390.28 : 170,284.02 = 69,675.76 : x
  2. Step 2: Convert to fraction form
    123,390.28/170,284.02 = 69,675.76/x
  3. Step 3: Cross multiply
    123,390.28x = 170,284.02 × 69,675.76
  4. Step 4: Simplify right side
    123,390.28x = 11,864,668,509.36
  5. Step 5: Solve for x
    x = 11,864,668,509.36/123,390.28
  6. Step 6: Final answer
    x = 96,155.62

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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.