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Finding the Fourth Proportional to 150,915, 208,437.66 and 100,526.52

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Solution

The fourth proportional to 150,915, 208,437.66 and 100,526.52 is: 138,843.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,915 : 208,437.66 = 100,526.52 : x
  2. Step 2: Convert to fraction form
    150,915/208,437.66 = 100,526.52/x
  3. Step 3: Cross multiply
    150,915x = 208,437.66 × 100,526.52
  4. Step 4: Simplify right side
    150,915x = 20,953,512,596.74
  5. Step 5: Solve for x
    x = 20,953,512,596.74/150,915
  6. Step 6: Final answer
    x = 138,843.14

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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.