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Finding the Fourth Proportional to 125,012.63, 172,516.76 and 67,651.91

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Solution

The fourth proportional to 125,012.63, 172,516.76 and 67,651.91 is: 93,359.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,012.63 : 172,516.76 = 67,651.91 : x
  2. Step 2: Convert to fraction form
    125,012.63/172,516.76 = 67,651.91/x
  3. Step 3: Cross multiply
    125,012.63x = 172,516.76 × 67,651.91
  4. Step 4: Simplify right side
    125,012.63x = 11,671,087,120.17
  5. Step 5: Solve for x
    x = 11,671,087,120.17/125,012.63
  6. Step 6: Final answer
    x = 93,359.27

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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.