Home / 123,567.64-170,523.18-66,979

Finding the Fourth Proportional to 123,567.64, 170,523.18 and 66,979

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Solution

The fourth proportional to 123,567.64, 170,523.18 and 66,979 is: 92,430.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,567.64 : 170,523.18 = 66,979 : x
  2. Step 2: Convert to fraction form
    123,567.64/170,523.18 = 66,979/x
  3. Step 3: Cross multiply
    123,567.64x = 170,523.18 × 66,979
  4. Step 4: Simplify right side
    123,567.64x = 11,421,472,073.22
  5. Step 5: Solve for x
    x = 11,421,472,073.22/123,567.64
  6. Step 6: Final answer
    x = 92,430.93

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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.