Home / 156,983.13-216,638.55-85,364.82

Finding the Fourth Proportional to 156,983.13, 216,638.55 and 85,364.82

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Solution

The fourth proportional to 156,983.13, 216,638.55 and 85,364.82 is: 117,804.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,983.13 : 216,638.55 = 85,364.82 : x
  2. Step 2: Convert to fraction form
    156,983.13/216,638.55 = 85,364.82/x
  3. Step 3: Cross multiply
    156,983.13x = 216,638.55 × 85,364.82
  4. Step 4: Simplify right side
    156,983.13x = 18,493,310,825.81
  5. Step 5: Solve for x
    x = 18,493,310,825.81/156,983.13
  6. Step 6: Final answer
    x = 117,804.45

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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.