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Finding the Fourth Proportional to 130,361.71, 179,899.15 and 70,745.71

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Solution

The fourth proportional to 130,361.71, 179,899.15 and 70,745.71 is: 97,629.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,361.71 : 179,899.15 = 70,745.71 : x
  2. Step 2: Convert to fraction form
    130,361.71/179,899.15 = 70,745.71/x
  3. Step 3: Cross multiply
    130,361.71x = 179,899.15 × 70,745.71
  4. Step 4: Simplify right side
    130,361.71x = 12,727,092,741.42
  5. Step 5: Solve for x
    x = 12,727,092,741.42/130,361.71
  6. Step 6: Final answer
    x = 97,629.07

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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.