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Finding the Fourth Proportional to 120,103.04, 165,747.48 and 74,807.84

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Solution

The fourth proportional to 120,103.04, 165,747.48 and 74,807.84 is: 103,238.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,103.04 : 165,747.48 = 74,807.84 : x
  2. Step 2: Convert to fraction form
    120,103.04/165,747.48 = 74,807.84/x
  3. Step 3: Cross multiply
    120,103.04x = 165,747.48 × 74,807.84
  4. Step 4: Simplify right side
    120,103.04x = 12,399,210,964.24
  5. Step 5: Solve for x
    x = 12,399,210,964.24/120,103.04
  6. Step 6: Final answer
    x = 103,238.11

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1.5x scale

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.