Home / 125,226.16-172,811.12-68,637.40

Finding the Fourth Proportional to 125,226.16, 172,811.12 and 68,637.40

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Solution

The fourth proportional to 125,226.16, 172,811.12 and 68,637.40 is: 94,719.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,226.16 : 172,811.12 = 68,637.40 : x
  2. Step 2: Convert to fraction form
    125,226.16/172,811.12 = 68,637.40/x
  3. Step 3: Cross multiply
    125,226.16x = 172,811.12 × 68,637.40
  4. Step 4: Simplify right side
    125,226.16x = 11,861,305,967.89
  5. Step 5: Solve for x
    x = 11,861,305,967.89/125,226.16
  6. Step 6: Final answer
    x = 94,719.07

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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.