Home / 257,782.05-386,668.80-105,948.36

Finding the Fourth Proportional to 257,782.05, 386,668.80 and 105,948.36

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Solution

The fourth proportional to 257,782.05, 386,668.80 and 105,948.36 is: 158,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,782.05 : 386,668.80 = 105,948.36 : x
  2. Step 2: Convert to fraction form
    257,782.05/386,668.80 = 105,948.36/x
  3. Step 3: Cross multiply
    257,782.05x = 386,668.80 × 105,948.36
  4. Step 4: Simplify right side
    257,782.05x = 40,966,925,223.17
  5. Step 5: Solve for x
    x = 40,966,925,223.17/257,782.05
  6. Step 6: Final answer
    x = 158,920.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.