Home / 156,821.48-216,412.47-85,202.09

Finding the Fourth Proportional to 156,821.48, 216,412.47 and 85,202.09

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Solution

The fourth proportional to 156,821.48, 216,412.47 and 85,202.09 is: 117,578.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,821.48 : 216,412.47 = 85,202.09 : x
  2. Step 2: Convert to fraction form
    156,821.48/216,412.47 = 85,202.09/x
  3. Step 3: Cross multiply
    156,821.48x = 216,412.47 × 85,202.09
  4. Step 4: Simplify right side
    156,821.48x = 18,438,794,746.06
  5. Step 5: Solve for x
    x = 18,438,794,746.06/156,821.48
  6. Step 6: Final answer
    x = 117,578.25

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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.