Home / 139,972.60-209,897.34-51,203.08

Finding the Fourth Proportional to 139,972.60, 209,897.34 and 51,203.08

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Solution

The fourth proportional to 139,972.60, 209,897.34 and 51,203.08 is: 76,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,972.60 : 209,897.34 = 51,203.08 : x
  2. Step 2: Convert to fraction form
    139,972.60/209,897.34 = 51,203.08/x
  3. Step 3: Cross multiply
    139,972.60x = 209,897.34 × 51,203.08
  4. Step 4: Simplify right side
    139,972.60x = 10,747,390,291.81
  5. Step 5: Solve for x
    x = 10,747,390,291.81/139,972.60
  6. Step 6: Final answer
    x = 76,782.10

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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.