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Finding the Fourth Proportional to 157,355.51, 217,232.71 and 122,826.11

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Solution

The fourth proportional to 157,355.51, 217,232.71 and 122,826.11 is: 169,564.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,355.51 : 217,232.71 = 122,826.11 : x
  2. Step 2: Convert to fraction form
    157,355.51/217,232.71 = 122,826.11/x
  3. Step 3: Cross multiply
    157,355.51x = 217,232.71 × 122,826.11
  4. Step 4: Simplify right side
    157,355.51x = 26,681,847,340.83
  5. Step 5: Solve for x
    x = 26,681,847,340.83/157,355.51
  6. Step 6: Final answer
    x = 169,564.12

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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.