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Finding the Fourth Proportional to 105,487.94, 158,214.85 and 38,959.40

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Solution

The fourth proportional to 105,487.94, 158,214.85 and 38,959.40 is: 58,432.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,487.94 : 158,214.85 = 38,959.40 : x
  2. Step 2: Convert to fraction form
    105,487.94/158,214.85 = 38,959.40/x
  3. Step 3: Cross multiply
    105,487.94x = 158,214.85 × 38,959.40
  4. Step 4: Simplify right side
    105,487.94x = 6,163,955,134.15
  5. Step 5: Solve for x
    x = 6,163,955,134.15/105,487.94
  6. Step 6: Final answer
    x = 58,432.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.