Home / 207,979.16-287,011.22-112,485.83

Finding the Fourth Proportional to 207,979.16, 287,011.22 and 112,485.83

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Solution

The fourth proportional to 207,979.16, 287,011.22 and 112,485.83 is: 155,230.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,979.16 : 287,011.22 = 112,485.83 : x
  2. Step 2: Convert to fraction form
    207,979.16/287,011.22 = 112,485.83/x
  3. Step 3: Cross multiply
    207,979.16x = 287,011.22 × 112,485.83
  4. Step 4: Simplify right side
    207,979.16x = 32,284,693,303.53
  5. Step 5: Solve for x
    x = 32,284,693,303.53/207,979.16
  6. Step 6: Final answer
    x = 155,230.43

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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.