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Finding the Fourth Proportional to 139,376.68, 209,094.72 and 39,567.40

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Solution

The fourth proportional to 139,376.68, 209,094.72 and 39,567.40 is: 59,359.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,376.68 : 209,094.72 = 39,567.40 : x
  2. Step 2: Convert to fraction form
    139,376.68/209,094.72 = 39,567.40/x
  3. Step 3: Cross multiply
    139,376.68x = 209,094.72 × 39,567.40
  4. Step 4: Simplify right side
    139,376.68x = 8,273,334,424.13
  5. Step 5: Solve for x
    x = 8,273,334,424.13/139,376.68
  6. Step 6: Final answer
    x = 59,359.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.