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Finding the Fourth Proportional to 139,587, 192,632.49 and 75,925.86

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Solution

The fourth proportional to 139,587, 192,632.49 and 75,925.86 is: 104,779.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,587 : 192,632.49 = 75,925.86 : x
  2. Step 2: Convert to fraction form
    139,587/192,632.49 = 75,925.86/x
  3. Step 3: Cross multiply
    139,587x = 192,632.49 × 75,925.86
  4. Step 4: Simplify right side
    139,587x = 14,625,787,467.19
  5. Step 5: Solve for x
    x = 14,625,787,467.19/139,587
  6. Step 6: Final answer
    x = 104,779.01

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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.