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Finding the Fourth Proportional to 101,436.66, 152,168.85 and 42,258.51

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Solution

The fourth proportional to 101,436.66, 152,168.85 and 42,258.51 is: 63,393.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,436.66 : 152,168.85 = 42,258.51 : x
  2. Step 2: Convert to fraction form
    101,436.66/152,168.85 = 42,258.51/x
  3. Step 3: Cross multiply
    101,436.66x = 152,168.85 × 42,258.51
  4. Step 4: Simplify right side
    101,436.66x = 6,430,428,869.41
  5. Step 5: Solve for x
    x = 6,430,428,869.41/101,436.66
  6. Step 6: Final answer
    x = 63,393.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.