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Finding the Fourth Proportional to 148,959.59, 205,551.99 and 87,696.05

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Solution

The fourth proportional to 148,959.59, 205,551.99 and 87,696.05 is: 121,013.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,959.59 : 205,551.99 = 87,696.05 : x
  2. Step 2: Convert to fraction form
    148,959.59/205,551.99 = 87,696.05/x
  3. Step 3: Cross multiply
    148,959.59x = 205,551.99 × 87,696.05
  4. Step 4: Simplify right side
    148,959.59x = 18,026,097,592.64
  5. Step 5: Solve for x
    x = 18,026,097,592.64/148,959.59
  6. Step 6: Final answer
    x = 121,013.34

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1.5x scale

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.