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Finding the Fourth Proportional to 170,880, 235,801.12 and 99,248.32

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Solution

The fourth proportional to 170,880, 235,801.12 and 99,248.32 is: 136,954.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,880 : 235,801.12 = 99,248.32 : x
  2. Step 2: Convert to fraction form
    170,880/235,801.12 = 99,248.32/x
  3. Step 3: Cross multiply
    170,880x = 235,801.12 × 99,248.32
  4. Step 4: Simplify right side
    170,880x = 23,402,865,014.12
  5. Step 5: Solve for x
    x = 23,402,865,014.12/170,880
  6. Step 6: Final answer
    x = 136,954.97

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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.