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Finding the Fourth Proportional to 125,289.94, 172,901.30 and 67,929.11

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Solution

The fourth proportional to 125,289.94, 172,901.30 and 67,929.11 is: 93,742.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,289.94 : 172,901.30 = 67,929.11 : x
  2. Step 2: Convert to fraction form
    125,289.94/172,901.30 = 67,929.11/x
  3. Step 3: Cross multiply
    125,289.94x = 172,901.30 × 67,929.11
  4. Step 4: Simplify right side
    125,289.94x = 11,745,032,225.74
  5. Step 5: Solve for x
    x = 11,745,032,225.74/125,289.94
  6. Step 6: Final answer
    x = 93,742.82

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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.