Home / 121,018.20-181,181.70-117,562.20

Finding the Fourth Proportional to 121,018.20, 181,181.70 and 117,562.20

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Solution

The fourth proportional to 121,018.20, 181,181.70 and 117,562.20 is: 176,007.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,018.20 : 181,181.70 = 117,562.20 : x
  2. Step 2: Convert to fraction form
    121,018.20/181,181.70 = 117,562.20/x
  3. Step 3: Cross multiply
    121,018.20x = 181,181.70 × 117,562.20
  4. Step 4: Simplify right side
    121,018.20x = 21,300,119,251.74
  5. Step 5: Solve for x
    x = 21,300,119,251.74/121,018.20
  6. Step 6: Final answer
    x = 176,007.57

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1.5x scale

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.