Home / 165,901.20-248,851.80-139,981.20

Finding the Fourth Proportional to 165,901.20, 248,851.80 and 139,981.20

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Solution

The fourth proportional to 165,901.20, 248,851.80 and 139,981.20 is: 209,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,901.20 : 248,851.80 = 139,981.20 : x
  2. Step 2: Convert to fraction form
    165,901.20/248,851.80 = 139,981.20/x
  3. Step 3: Cross multiply
    165,901.20x = 248,851.80 × 139,981.20
  4. Step 4: Simplify right side
    165,901.20x = 34,834,573,586.16
  5. Step 5: Solve for x
    x = 34,834,573,586.16/165,901.20
  6. Step 6: Final answer
    x = 209,971.80

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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.