Home / 217,925.64-326,876.94-128,017.80

Finding the Fourth Proportional to 217,925.64, 326,876.94 and 128,017.80

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Solution

The fourth proportional to 217,925.64, 326,876.94 and 128,017.80 is: 192,019.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,925.64 : 326,876.94 = 128,017.80 : x
  2. Step 2: Convert to fraction form
    217,925.64/326,876.94 = 128,017.80/x
  3. Step 3: Cross multiply
    217,925.64x = 326,876.94 × 128,017.80
  4. Step 4: Simplify right side
    217,925.64x = 41,846,066,729.53
  5. Step 5: Solve for x
    x = 41,846,066,729.53/217,925.64
  6. Step 6: Final answer
    x = 192,019.93

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1.5x scale

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.