Home / 147,645.10-221,139.60-121,401.10

Finding the Fourth Proportional to 147,645.10, 221,139.60 and 121,401.10

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Solution

The fourth proportional to 147,645.10, 221,139.60 and 121,401.10 is: 181,831.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,645.10 : 221,139.60 = 121,401.10 : x
  2. Step 2: Convert to fraction form
    147,645.10/221,139.60 = 121,401.10/x
  3. Step 3: Cross multiply
    147,645.10x = 221,139.60 × 121,401.10
  4. Step 4: Simplify right side
    147,645.10x = 26,846,590,693.56
  5. Step 5: Solve for x
    x = 26,846,590,693.56/147,645.10
  6. Step 6: Final answer
    x = 181,831.91

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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.