Home / 155,942.58-215,192.53-87,957.62

Finding the Fourth Proportional to 155,942.58, 215,192.53 and 87,957.62

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Solution

The fourth proportional to 155,942.58, 215,192.53 and 87,957.62 is: 121,376.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,942.58 : 215,192.53 = 87,957.62 : x
  2. Step 2: Convert to fraction form
    155,942.58/215,192.53 = 87,957.62/x
  3. Step 3: Cross multiply
    155,942.58x = 215,192.53 × 87,957.62
  4. Step 4: Simplify right side
    155,942.58x = 18,927,822,780.58
  5. Step 5: Solve for x
    x = 18,927,822,780.58/155,942.58
  6. Step 6: Final answer
    x = 121,376.87

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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.