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Finding the Fourth Proportional to 202,013.58, 278,780.64 and 111,372.72

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Solution

The fourth proportional to 202,013.58, 278,780.64 and 111,372.72 is: 153,695.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,013.58 : 278,780.64 = 111,372.72 : x
  2. Step 2: Convert to fraction form
    202,013.58/278,780.64 = 111,372.72/x
  3. Step 3: Cross multiply
    202,013.58x = 278,780.64 × 111,372.72
  4. Step 4: Simplify right side
    202,013.58x = 31,048,558,160.14
  5. Step 5: Solve for x
    x = 31,048,558,160.14/202,013.58
  6. Step 6: Final answer
    x = 153,695.40

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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.