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Finding the Fourth Proportional to 157,775.40, 217,606.98 and 101,191.08

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Solution

The fourth proportional to 157,775.40, 217,606.98 and 101,191.08 is: 139,564.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,775.40 : 217,606.98 = 101,191.08 : x
  2. Step 2: Convert to fraction form
    157,775.40/217,606.98 = 101,191.08/x
  3. Step 3: Cross multiply
    157,775.40x = 217,606.98 × 101,191.08
  4. Step 4: Simplify right side
    157,775.40x = 22,019,885,321.74
  5. Step 5: Solve for x
    x = 22,019,885,321.74/157,775.40
  6. Step 6: Final answer
    x = 139,564.76

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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.