Home / 125,192.48-187,662.36-78,478.16

Finding the Fourth Proportional to 125,192.48, 187,662.36 and 78,478.16

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Solution

The fourth proportional to 125,192.48, 187,662.36 and 78,478.16 is: 117,638.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,192.48 : 187,662.36 = 78,478.16 : x
  2. Step 2: Convert to fraction form
    125,192.48/187,662.36 = 78,478.16/x
  3. Step 3: Cross multiply
    125,192.48x = 187,662.36 × 78,478.16
  4. Step 4: Simplify right side
    125,192.48x = 14,727,396,714.06
  5. Step 5: Solve for x
    x = 14,727,396,714.06/125,192.48
  6. Step 6: Final answer
    x = 117,638.03

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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.