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Finding the Fourth Proportional to 139,547.88, 192,575.04 and 75,885.72

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Solution

The fourth proportional to 139,547.88, 192,575.04 and 75,885.72 is: 104,721.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,547.88 : 192,575.04 = 75,885.72 : x
  2. Step 2: Convert to fraction form
    139,547.88/192,575.04 = 75,885.72/x
  3. Step 3: Cross multiply
    139,547.88x = 192,575.04 × 75,885.72
  4. Step 4: Simplify right side
    139,547.88x = 14,613,695,564.43
  5. Step 5: Solve for x
    x = 14,613,695,564.43/139,547.88
  6. Step 6: Final answer
    x = 104,721.73

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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.