Home / 123,270.16-170,100.28-71,569.36

Finding the Fourth Proportional to 123,270.16, 170,100.28 and 71,569.36

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Solution

The fourth proportional to 123,270.16, 170,100.28 and 71,569.36 is: 98,758.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,270.16 : 170,100.28 = 71,569.36 : x
  2. Step 2: Convert to fraction form
    123,270.16/170,100.28 = 71,569.36/x
  3. Step 3: Cross multiply
    123,270.16x = 170,100.28 × 71,569.36
  4. Step 4: Simplify right side
    123,270.16x = 12,173,968,175.42
  5. Step 5: Solve for x
    x = 12,173,968,175.42/123,270.16
  6. Step 6: Final answer
    x = 98,758.44

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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.