Home / 131,340.32-181,256.64-74,769.92

Finding the Fourth Proportional to 131,340.32, 181,256.64 and 74,769.92

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Solution

The fourth proportional to 131,340.32, 181,256.64 and 74,769.92 is: 103,186.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,340.32 : 181,256.64 = 74,769.92 : x
  2. Step 2: Convert to fraction form
    131,340.32/181,256.64 = 74,769.92/x
  3. Step 3: Cross multiply
    131,340.32x = 181,256.64 × 74,769.92
  4. Step 4: Simplify right side
    131,340.32x = 13,552,544,472.27
  5. Step 5: Solve for x
    x = 13,552,544,472.27/131,340.32
  6. Step 6: Final answer
    x = 103,186.47

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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.