Home / 137,320.30-205,807.65-121,768.30

Finding the Fourth Proportional to 137,320.30, 205,807.65 and 121,768.30

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Solution

The fourth proportional to 137,320.30, 205,807.65 and 121,768.30 is: 182,499.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,320.30 : 205,807.65 = 121,768.30 : x
  2. Step 2: Convert to fraction form
    137,320.30/205,807.65 = 121,768.30/x
  3. Step 3: Cross multiply
    137,320.30x = 205,807.65 × 121,768.30
  4. Step 4: Simplify right side
    137,320.30x = 25,060,847,667.50
  5. Step 5: Solve for x
    x = 25,060,847,667.50/137,320.30
  6. Step 6: Final answer
    x = 182,499.22

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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.