Home / 165,721.60-248,582.40-72,409.60

Finding the Fourth Proportional to 165,721.60, 248,582.40 and 72,409.60

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Solution

The fourth proportional to 165,721.60, 248,582.40 and 72,409.60 is: 108,614.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,721.60 : 248,582.40 = 72,409.60 : x
  2. Step 2: Convert to fraction form
    165,721.60/248,582.40 = 72,409.60/x
  3. Step 3: Cross multiply
    165,721.60x = 248,582.40 × 72,409.60
  4. Step 4: Simplify right side
    165,721.60x = 17,999,752,151.04
  5. Step 5: Solve for x
    x = 17,999,752,151.04/165,721.60
  6. Step 6: Final answer
    x = 108,614.40

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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.