Home / 123,356.64-170,233.62-72,370.26

Finding the Fourth Proportional to 123,356.64, 170,233.62 and 72,370.26

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Solution

The fourth proportional to 123,356.64, 170,233.62 and 72,370.26 is: 99,871.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,356.64 : 170,233.62 = 72,370.26 : x
  2. Step 2: Convert to fraction form
    123,356.64/170,233.62 = 72,370.26/x
  3. Step 3: Cross multiply
    123,356.64x = 170,233.62 × 72,370.26
  4. Step 4: Simplify right side
    123,356.64x = 12,319,851,340.14
  5. Step 5: Solve for x
    x = 12,319,851,340.14/123,356.64
  6. Step 6: Final answer
    x = 99,871.81

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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.