Home / 128,145.64-191,839.92-94,643.20

Finding the Fourth Proportional to 128,145.64, 191,839.92 and 94,643.20

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Solution

The fourth proportional to 128,145.64, 191,839.92 and 94,643.20 is: 141,685.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,145.64 : 191,839.92 = 94,643.20 : x
  2. Step 2: Convert to fraction form
    128,145.64/191,839.92 = 94,643.20/x
  3. Step 3: Cross multiply
    128,145.64x = 191,839.92 × 94,643.20
  4. Step 4: Simplify right side
    128,145.64x = 18,156,343,916.54
  5. Step 5: Solve for x
    x = 18,156,343,916.54/128,145.64
  6. Step 6: Final answer
    x = 141,685.23

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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.