Home / 125,225.12-172,814.04-68,638.64

Finding the Fourth Proportional to 125,225.12, 172,814.04 and 68,638.64

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Solution

The fourth proportional to 125,225.12, 172,814.04 and 68,638.64 is: 94,723.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,225.12 : 172,814.04 = 68,638.64 : x
  2. Step 2: Convert to fraction form
    125,225.12/172,814.04 = 68,638.64/x
  3. Step 3: Cross multiply
    125,225.12x = 172,814.04 × 68,638.64
  4. Step 4: Simplify right side
    125,225.12x = 11,861,720,678.51
  5. Step 5: Solve for x
    x = 11,861,720,678.51/125,225.12
  6. Step 6: Final answer
    x = 94,723.17

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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.