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Finding the Fourth Proportional to 139,303.08, 192,240 and 75,641.94

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Solution

The fourth proportional to 139,303.08, 192,240 and 75,641.94 is: 104,386.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,303.08 : 192,240 = 75,641.94 : x
  2. Step 2: Convert to fraction form
    139,303.08/192,240 = 75,641.94/x
  3. Step 3: Cross multiply
    139,303.08x = 192,240 × 75,641.94
  4. Step 4: Simplify right side
    139,303.08x = 14,541,406,545.60
  5. Step 5: Solve for x
    x = 14,541,406,545.60/139,303.08
  6. Step 6: Final answer
    x = 104,386.83

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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.