Home / 148,678.64-205,176.63-80,695.61

Finding the Fourth Proportional to 148,678.64, 205,176.63 and 80,695.61

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Solution

The fourth proportional to 148,678.64, 205,176.63 and 80,695.61 is: 111,359.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,678.64 : 205,176.63 = 80,695.61 : x
  2. Step 2: Convert to fraction form
    148,678.64/205,176.63 = 80,695.61/x
  3. Step 3: Cross multiply
    148,678.64x = 205,176.63 × 80,695.61
  4. Step 4: Simplify right side
    148,678.64x = 16,556,851,886.23
  5. Step 5: Solve for x
    x = 16,556,851,886.23/148,678.64
  6. Step 6: Final answer
    x = 111,359.99

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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.