Home / 157,721.80-236,582.70-78,848.20

Finding the Fourth Proportional to 157,721.80, 236,582.70 and 78,848.20

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Solution

The fourth proportional to 157,721.80, 236,582.70 and 78,848.20 is: 118,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,721.80 : 236,582.70 = 78,848.20 : x
  2. Step 2: Convert to fraction form
    157,721.80/236,582.70 = 78,848.20/x
  3. Step 3: Cross multiply
    157,721.80x = 236,582.70 × 78,848.20
  4. Step 4: Simplify right side
    157,721.80x = 18,654,120,046.14
  5. Step 5: Solve for x
    x = 18,654,120,046.14/157,721.80
  6. Step 6: Final answer
    x = 118,272.30

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1.5x scale

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.