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Finding the Fourth Proportional to 139,238.16, 192,248.48 and 85,595.08

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Solution

The fourth proportional to 139,238.16, 192,248.48 and 85,595.08 is: 118,182.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,238.16 : 192,248.48 = 85,595.08 : x
  2. Step 2: Convert to fraction form
    139,238.16/192,248.48 = 85,595.08/x
  3. Step 3: Cross multiply
    139,238.16x = 192,248.48 × 85,595.08
  4. Step 4: Simplify right side
    139,238.16x = 16,455,524,025.48
  5. Step 5: Solve for x
    x = 16,455,524,025.48/139,238.16
  6. Step 6: Final answer
    x = 118,182.57

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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.