Home / 124,768.23-172,128.69-90,702.06

Finding the Fourth Proportional to 124,768.23, 172,128.69 and 90,702.06

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Solution

The fourth proportional to 124,768.23, 172,128.69 and 90,702.06 is: 125,131.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,768.23 : 172,128.69 = 90,702.06 : x
  2. Step 2: Convert to fraction form
    124,768.23/172,128.69 = 90,702.06/x
  3. Step 3: Cross multiply
    124,768.23x = 172,128.69 × 90,702.06
  4. Step 4: Simplify right side
    124,768.23x = 15,612,426,768.10
  5. Step 5: Solve for x
    x = 15,612,426,768.10/124,768.23
  6. Step 6: Final answer
    x = 125,131.43

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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.