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Finding the Fourth Proportional to 109,271.80, 163,877.70 and 69,230.68

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Solution

The fourth proportional to 109,271.80, 163,877.70 and 69,230.68 is: 103,827.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,271.80 : 163,877.70 = 69,230.68 : x
  2. Step 2: Convert to fraction form
    109,271.80/163,877.70 = 69,230.68/x
  3. Step 3: Cross multiply
    109,271.80x = 163,877.70 × 69,230.68
  4. Step 4: Simplify right side
    109,271.80x = 11,345,364,607.84
  5. Step 5: Solve for x
    x = 11,345,364,607.84/109,271.80
  6. Step 6: Final answer
    x = 103,827.01

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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.