Home / 159,012.08-219,355.80-121,220.72

Finding the Fourth Proportional to 159,012.08, 219,355.80 and 121,220.72

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Solution

The fourth proportional to 159,012.08, 219,355.80 and 121,220.72 is: 167,222.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,012.08 : 219,355.80 = 121,220.72 : x
  2. Step 2: Convert to fraction form
    159,012.08/219,355.80 = 121,220.72/x
  3. Step 3: Cross multiply
    159,012.08x = 219,355.80 × 121,220.72
  4. Step 4: Simplify right side
    159,012.08x = 26,590,468,012.18
  5. Step 5: Solve for x
    x = 26,590,468,012.18/159,012.08
  6. Step 6: Final answer
    x = 167,222.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.