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Finding the Fourth Proportional to 207,903.54, 286,980.60 and 123,020.40

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Solution

The fourth proportional to 207,903.54, 286,980.60 and 123,020.40 is: 169,811.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,903.54 : 286,980.60 = 123,020.40 : x
  2. Step 2: Convert to fraction form
    207,903.54/286,980.60 = 123,020.40/x
  3. Step 3: Cross multiply
    207,903.54x = 286,980.60 × 123,020.40
  4. Step 4: Simplify right side
    207,903.54x = 35,304,468,204.24
  5. Step 5: Solve for x
    x = 35,304,468,204.24/207,903.54
  6. Step 6: Final answer
    x = 169,811.77

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1.5x scale

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.