Home / 138,325.66-189,645.20-135,803.77

Finding the Fourth Proportional to 138,325.66, 189,645.20 and 135,803.77

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Solution

The fourth proportional to 138,325.66, 189,645.20 and 135,803.77 is: 186,187.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,325.66 : 189,645.20 = 135,803.77 : x
  2. Step 2: Convert to fraction form
    138,325.66/189,645.20 = 135,803.77/x
  3. Step 3: Cross multiply
    138,325.66x = 189,645.20 × 135,803.77
  4. Step 4: Simplify right side
    138,325.66x = 25,754,533,545.29
  5. Step 5: Solve for x
    x = 25,754,533,545.29/138,325.66
  6. Step 6: Final answer
    x = 186,187.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.