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Finding the Fourth Proportional to 157,298.78, 217,119.75 and 107,026.94

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Solution

The fourth proportional to 157,298.78, 217,119.75 and 107,026.94 is: 147,729.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,298.78 : 217,119.75 = 107,026.94 : x
  2. Step 2: Convert to fraction form
    157,298.78/217,119.75 = 107,026.94/x
  3. Step 3: Cross multiply
    157,298.78x = 217,119.75 × 107,026.94
  4. Step 4: Simplify right side
    157,298.78x = 23,237,662,456.07
  5. Step 5: Solve for x
    x = 23,237,662,456.07/157,298.78
  6. Step 6: Final answer
    x = 147,729.45

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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.