Home / 156,641.39-216,165.36-85,021.47

Finding the Fourth Proportional to 156,641.39, 216,165.36 and 85,021.47

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Solution

The fourth proportional to 156,641.39, 216,165.36 and 85,021.47 is: 117,329.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,641.39 : 216,165.36 = 85,021.47 : x
  2. Step 2: Convert to fraction form
    156,641.39/216,165.36 = 85,021.47/x
  3. Step 3: Cross multiply
    156,641.39x = 216,165.36 × 85,021.47
  4. Step 4: Simplify right side
    156,641.39x = 18,378,697,118.83
  5. Step 5: Solve for x
    x = 18,378,697,118.83/156,641.39
  6. Step 6: Final answer
    x = 117,329.76

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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.