Home / 131,513.77-181,445.46-74,145.91

Finding the Fourth Proportional to 131,513.77, 181,445.46 and 74,145.91

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Solution

The fourth proportional to 131,513.77, 181,445.46 and 74,145.91 is: 102,296.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,513.77 : 181,445.46 = 74,145.91 : x
  2. Step 2: Convert to fraction form
    131,513.77/181,445.46 = 74,145.91/x
  3. Step 3: Cross multiply
    131,513.77x = 181,445.46 × 74,145.91
  4. Step 4: Simplify right side
    131,513.77x = 13,453,438,747.07
  5. Step 5: Solve for x
    x = 13,453,438,747.07/131,513.77
  6. Step 6: Final answer
    x = 102,296.81

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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.