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Finding the Fourth Proportional to 153,859.54, 212,158.78 and 100,044.76

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Solution

The fourth proportional to 153,859.54, 212,158.78 and 100,044.76 is: 137,952.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,859.54 : 212,158.78 = 100,044.76 : x
  2. Step 2: Convert to fraction form
    153,859.54/212,158.78 = 100,044.76/x
  3. Step 3: Cross multiply
    153,859.54x = 212,158.78 × 100,044.76
  4. Step 4: Simplify right side
    153,859.54x = 21,225,374,226.99
  5. Step 5: Solve for x
    x = 21,225,374,226.99/153,859.54
  6. Step 6: Final answer
    x = 137,952.93

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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.