Home / 123,455.28-170,368.32-66,866.88

Finding the Fourth Proportional to 123,455.28, 170,368.32 and 66,866.88

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Solution

The fourth proportional to 123,455.28, 170,368.32 and 66,866.88 is: 92,276.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,455.28 : 170,368.32 = 66,866.88 : x
  2. Step 2: Convert to fraction form
    123,455.28/170,368.32 = 66,866.88/x
  3. Step 3: Cross multiply
    123,455.28x = 170,368.32 × 66,866.88
  4. Step 4: Simplify right side
    123,455.28x = 11,391,998,009.24
  5. Step 5: Solve for x
    x = 11,391,998,009.24/123,455.28
  6. Step 6: Final answer
    x = 92,276.31

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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.