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Finding the Fourth Proportional to 112,955.31, 169,322.81 and 53,775.09

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Solution

The fourth proportional to 112,955.31, 169,322.81 and 53,775.09 is: 80,610.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,955.31 : 169,322.81 = 53,775.09 : x
  2. Step 2: Convert to fraction form
    112,955.31/169,322.81 = 53,775.09/x
  3. Step 3: Cross multiply
    112,955.31x = 169,322.81 × 53,775.09
  4. Step 4: Simplify right side
    112,955.31x = 9,105,349,077.93
  5. Step 5: Solve for x
    x = 9,105,349,077.93/112,955.31
  6. Step 6: Final answer
    x = 80,610.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.