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Finding the Fourth Proportional to 139,569.32, 209,622.60 and 119,623.88

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Solution

The fourth proportional to 139,569.32, 209,622.60 and 119,623.88 is: 179,666.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,569.32 : 209,622.60 = 119,623.88 : x
  2. Step 2: Convert to fraction form
    139,569.32/209,622.60 = 119,623.88/x
  3. Step 3: Cross multiply
    139,569.32x = 209,622.60 × 119,623.88
  4. Step 4: Simplify right side
    139,569.32x = 25,075,868,747.69
  5. Step 5: Solve for x
    x = 25,075,868,747.69/139,569.32
  6. Step 6: Final answer
    x = 179,666.05

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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.