Home / 191,296.10-286,933.08-72,979.40

Finding the Fourth Proportional to 191,296.10, 286,933.08 and 72,979.40

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Solution

The fourth proportional to 191,296.10, 286,933.08 and 72,979.40 is: 109,464.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,296.10 : 286,933.08 = 72,979.40 : x
  2. Step 2: Convert to fraction form
    191,296.10/286,933.08 = 72,979.40/x
  3. Step 3: Cross multiply
    191,296.10x = 286,933.08 × 72,979.40
  4. Step 4: Simplify right side
    191,296.10x = 20,940,204,018.55
  5. Step 5: Solve for x
    x = 20,940,204,018.55/191,296.10
  6. Step 6: Final answer
    x = 109,464.88

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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.