Home / 124,763.89-172,125.34-76,934.20

Finding the Fourth Proportional to 124,763.89, 172,125.34 and 76,934.20

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Solution

The fourth proportional to 124,763.89, 172,125.34 and 76,934.20 is: 106,139.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,763.89 : 172,125.34 = 76,934.20 : x
  2. Step 2: Convert to fraction form
    124,763.89/172,125.34 = 76,934.20/x
  3. Step 3: Cross multiply
    124,763.89x = 172,125.34 × 76,934.20
  4. Step 4: Simplify right side
    124,763.89x = 13,242,325,332.63
  5. Step 5: Solve for x
    x = 13,242,325,332.63/124,763.89
  6. Step 6: Final answer
    x = 106,139.09

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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.