Home / 217,370.32-299,967.20-121,876.72

Finding the Fourth Proportional to 217,370.32, 299,967.20 and 121,876.72

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Solution

The fourth proportional to 217,370.32, 299,967.20 and 121,876.72 is: 168,187.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,370.32 : 299,967.20 = 121,876.72 : x
  2. Step 2: Convert to fraction form
    217,370.32/299,967.20 = 121,876.72/x
  3. Step 3: Cross multiply
    217,370.32x = 299,967.20 × 121,876.72
  4. Step 4: Simplify right side
    217,370.32x = 36,559,018,443.58
  5. Step 5: Solve for x
    x = 36,559,018,443.58/217,370.32
  6. Step 6: Final answer
    x = 168,187.72

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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.