Home / 193,139.32-289,541.56-74,729.20

Finding the Fourth Proportional to 193,139.32, 289,541.56 and 74,729.20

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Solution

The fourth proportional to 193,139.32, 289,541.56 and 74,729.20 is: 112,029.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,139.32 : 289,541.56 = 74,729.20 : x
  2. Step 2: Convert to fraction form
    193,139.32/289,541.56 = 74,729.20/x
  3. Step 3: Cross multiply
    193,139.32x = 289,541.56 × 74,729.20
  4. Step 4: Simplify right side
    193,139.32x = 21,637,209,145.55
  5. Step 5: Solve for x
    x = 21,637,209,145.55/193,139.32
  6. Step 6: Final answer
    x = 112,029.02

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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.