Home / 157,971.33-218,000.45-86,351.64

Finding the Fourth Proportional to 157,971.33, 218,000.45 and 86,351.64

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Solution

The fourth proportional to 157,971.33, 218,000.45 and 86,351.64 is: 119,165.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,971.33 : 218,000.45 = 86,351.64 : x
  2. Step 2: Convert to fraction form
    157,971.33/218,000.45 = 86,351.64/x
  3. Step 3: Cross multiply
    157,971.33x = 218,000.45 × 86,351.64
  4. Step 4: Simplify right side
    157,971.33x = 18,824,695,946.48
  5. Step 5: Solve for x
    x = 18,824,695,946.48/157,971.33
  6. Step 6: Final answer
    x = 119,165.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.