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Finding the Fourth Proportional to 151,990.58, 209,746.50 and 84,922.58

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Solution

The fourth proportional to 151,990.58, 209,746.50 and 84,922.58 is: 117,192.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,990.58 : 209,746.50 = 84,922.58 : x
  2. Step 2: Convert to fraction form
    151,990.58/209,746.50 = 84,922.58/x
  3. Step 3: Cross multiply
    151,990.58x = 209,746.50 × 84,922.58
  4. Step 4: Simplify right side
    151,990.58x = 17,812,213,925.97
  5. Step 5: Solve for x
    x = 17,812,213,925.97/151,990.58
  6. Step 6: Final answer
    x = 117,192.88

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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.