Home / 216,555.89-298,856.40-121,062.56

Finding the Fourth Proportional to 216,555.89, 298,856.40 and 121,062.56

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Solution

The fourth proportional to 216,555.89, 298,856.40 and 121,062.56 is: 167,071.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,555.89 : 298,856.40 = 121,062.56 : x
  2. Step 2: Convert to fraction form
    216,555.89/298,856.40 = 121,062.56/x
  3. Step 3: Cross multiply
    216,555.89x = 298,856.40 × 121,062.56
  4. Step 4: Simplify right side
    216,555.89x = 36,180,320,856.38
  5. Step 5: Solve for x
    x = 36,180,320,856.38/216,555.89
  6. Step 6: Final answer
    x = 167,071.52

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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.