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Finding the Fourth Proportional to 201,700.60, 278,344.51 and 111,054.70

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Solution

The fourth proportional to 201,700.60, 278,344.51 and 111,054.70 is: 153,254.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,700.60 : 278,344.51 = 111,054.70 : x
  2. Step 2: Convert to fraction form
    201,700.60/278,344.51 = 111,054.70/x
  3. Step 3: Cross multiply
    201,700.60x = 278,344.51 × 111,054.70
  4. Step 4: Simplify right side
    201,700.60x = 30,911,466,054.70
  5. Step 5: Solve for x
    x = 30,911,466,054.70/201,700.60
  6. Step 6: Final answer
    x = 153,254.21

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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.