Home / 125,312.07-172,892.86-76,864.20

Finding the Fourth Proportional to 125,312.07, 172,892.86 and 76,864.20

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Solution

The fourth proportional to 125,312.07, 172,892.86 and 76,864.20 is: 106,049.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,312.07 : 172,892.86 = 76,864.20 : x
  2. Step 2: Convert to fraction form
    125,312.07/172,892.86 = 76,864.20/x
  3. Step 3: Cross multiply
    125,312.07x = 172,892.86 × 76,864.20
  4. Step 4: Simplify right side
    125,312.07x = 13,289,271,609.68
  5. Step 5: Solve for x
    x = 13,289,271,609.68/125,312.07
  6. Step 6: Final answer
    x = 106,049.42

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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.