Home / 216,619.60-298,933-121,125.20

Finding the Fourth Proportional to 216,619.60, 298,933 and 121,125.20

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Solution

The fourth proportional to 216,619.60, 298,933 and 121,125.20 is: 167,151.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,619.60 : 298,933 = 121,125.20 : x
  2. Step 2: Convert to fraction form
    216,619.60/298,933 = 121,125.20/x
  3. Step 3: Cross multiply
    216,619.60x = 298,933 × 121,125.20
  4. Step 4: Simplify right side
    216,619.60x = 36,208,319,411.60
  5. Step 5: Solve for x
    x = 36,208,319,411.60/216,619.60
  6. Step 6: Final answer
    x = 167,151.63

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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.