Home / 157,384.12-217,187.22-85,764.76

Finding the Fourth Proportional to 157,384.12, 217,187.22 and 85,764.76

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Solution

The fourth proportional to 157,384.12, 217,187.22 and 85,764.76 is: 118,353.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,384.12 : 217,187.22 = 85,764.76 : x
  2. Step 2: Convert to fraction form
    157,384.12/217,187.22 = 85,764.76/x
  3. Step 3: Cross multiply
    157,384.12x = 217,187.22 × 85,764.76
  4. Step 4: Simplify right side
    157,384.12x = 18,627,009,798.37
  5. Step 5: Solve for x
    x = 18,627,009,798.37/157,384.12
  6. Step 6: Final answer
    x = 118,353.81

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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.