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Finding the Fourth Proportional to 139,107.24, 191,967.84 and 75,444.48

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Solution

The fourth proportional to 139,107.24, 191,967.84 and 75,444.48 is: 104,113.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,107.24 : 191,967.84 = 75,444.48 : x
  2. Step 2: Convert to fraction form
    139,107.24/191,967.84 = 75,444.48/x
  3. Step 3: Cross multiply
    139,107.24x = 191,967.84 × 75,444.48
  4. Step 4: Simplify right side
    139,107.24x = 14,482,913,865.52
  5. Step 5: Solve for x
    x = 14,482,913,865.52/139,107.24
  6. Step 6: Final answer
    x = 104,113.30

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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.