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Finding the Fourth Proportional to 202,009.88, 278,775.54 and 111,369.06

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Solution

The fourth proportional to 202,009.88, 278,775.54 and 111,369.06 is: 153,690.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,009.88 : 278,775.54 = 111,369.06 : x
  2. Step 2: Convert to fraction form
    202,009.88/278,775.54 = 111,369.06/x
  3. Step 3: Cross multiply
    202,009.88x = 278,775.54 × 111,369.06
  4. Step 4: Simplify right side
    202,009.88x = 31,046,969,840.79
  5. Step 5: Solve for x
    x = 31,046,969,840.79/202,009.88
  6. Step 6: Final answer
    x = 153,690.35

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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.