Home / 113,871.39-157,208.10-75,682.72

Finding the Fourth Proportional to 113,871.39, 157,208.10 and 75,682.72

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Solution

The fourth proportional to 113,871.39, 157,208.10 and 75,682.72 is: 104,485.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,871.39 : 157,208.10 = 75,682.72 : x
  2. Step 2: Convert to fraction form
    113,871.39/157,208.10 = 75,682.72/x
  3. Step 3: Cross multiply
    113,871.39x = 157,208.10 × 75,682.72
  4. Step 4: Simplify right side
    113,871.39x = 11,897,936,614.03
  5. Step 5: Solve for x
    x = 11,897,936,614.03/113,871.39
  6. Step 6: Final answer
    x = 104,485.74

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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.