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Finding the Fourth Proportional to 157,880.03, 217,871.89 and 86,258.51

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Solution

The fourth proportional to 157,880.03, 217,871.89 and 86,258.51 is: 119,035.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,880.03 : 217,871.89 = 86,258.51 : x
  2. Step 2: Convert to fraction form
    157,880.03/217,871.89 = 86,258.51/x
  3. Step 3: Cross multiply
    157,880.03x = 217,871.89 × 86,258.51
  4. Step 4: Simplify right side
    157,880.03x = 18,793,304,602.28
  5. Step 5: Solve for x
    x = 18,793,304,602.28/157,880.03
  6. Step 6: Final answer
    x = 119,035.35

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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.