Home / 139,580.34-209,458.02-73,073.70

Finding the Fourth Proportional to 139,580.34, 209,458.02 and 73,073.70

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Solution

The fourth proportional to 139,580.34, 209,458.02 and 73,073.70 is: 109,656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,580.34 : 209,458.02 = 73,073.70 : x
  2. Step 2: Convert to fraction form
    139,580.34/209,458.02 = 73,073.70/x
  3. Step 3: Cross multiply
    139,580.34x = 209,458.02 × 73,073.70
  4. Step 4: Simplify right side
    139,580.34x = 15,305,872,516.07
  5. Step 5: Solve for x
    x = 15,305,872,516.07/139,580.34
  6. Step 6: Final answer
    x = 109,656.36

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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.