Home / 136,100.34-187,841.76-87,688.68

Finding the Fourth Proportional to 136,100.34, 187,841.76 and 87,688.68

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Solution

The fourth proportional to 136,100.34, 187,841.76 and 87,688.68 is: 121,025.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,100.34 : 187,841.76 = 87,688.68 : x
  2. Step 2: Convert to fraction form
    136,100.34/187,841.76 = 87,688.68/x
  3. Step 3: Cross multiply
    136,100.34x = 187,841.76 × 87,688.68
  4. Step 4: Simplify right side
    136,100.34x = 16,471,595,983.28
  5. Step 5: Solve for x
    x = 16,471,595,983.28/136,100.34
  6. Step 6: Final answer
    x = 121,025.38

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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.