Home / 156,648.51-216,178.83-85,028.31

Finding the Fourth Proportional to 156,648.51, 216,178.83 and 85,028.31

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Solution

The fourth proportional to 156,648.51, 216,178.83 and 85,028.31 is: 117,341.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,648.51 : 216,178.83 = 85,028.31 : x
  2. Step 2: Convert to fraction form
    156,648.51/216,178.83 = 85,028.31/x
  3. Step 3: Cross multiply
    156,648.51x = 216,178.83 × 85,028.31
  4. Step 4: Simplify right side
    156,648.51x = 18,381,320,572.68
  5. Step 5: Solve for x
    x = 18,381,320,572.68/156,648.51
  6. Step 6: Final answer
    x = 117,341.18

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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.