Home / 220,789.71-304,688.93-123,980.10

Finding the Fourth Proportional to 220,789.71, 304,688.93 and 123,980.10

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Solution

The fourth proportional to 220,789.71, 304,688.93 and 123,980.10 is: 171,092.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,789.71 : 304,688.93 = 123,980.10 : x
  2. Step 2: Convert to fraction form
    220,789.71/304,688.93 = 123,980.10/x
  3. Step 3: Cross multiply
    220,789.71x = 304,688.93 × 123,980.10
  4. Step 4: Simplify right side
    220,789.71x = 37,775,364,010.29
  5. Step 5: Solve for x
    x = 37,775,364,010.29/220,789.71
  6. Step 6: Final answer
    x = 171,092.05

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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.