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Finding the Fourth Proportional to 125,034.63, 172,547.85 and 68,446

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Solution

The fourth proportional to 125,034.63, 172,547.85 and 68,446 is: 94,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,034.63 : 172,547.85 = 68,446 : x
  2. Step 2: Convert to fraction form
    125,034.63/172,547.85 = 68,446/x
  3. Step 3: Cross multiply
    125,034.63x = 172,547.85 × 68,446
  4. Step 4: Simplify right side
    125,034.63x = 11,810,210,141.10
  5. Step 5: Solve for x
    x = 11,810,210,141.10/125,034.63
  6. Step 6: Final answer
    x = 94,455.51

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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.