Home / 71,013.15-106,325.42-69,130.91

Finding the Fourth Proportional to 71,013.15, 106,325.42 and 69,130.91

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Solution

The fourth proportional to 71,013.15, 106,325.42 and 69,130.91 is: 103,507.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,013.15 : 106,325.42 = 69,130.91 : x
  2. Step 2: Convert to fraction form
    71,013.15/106,325.42 = 69,130.91/x
  3. Step 3: Cross multiply
    71,013.15x = 106,325.42 × 69,130.91
  4. Step 4: Simplify right side
    71,013.15x = 7,350,372,602.09
  5. Step 5: Solve for x
    x = 7,350,372,602.09/71,013.15
  6. Step 6: Final answer
    x = 103,507.21

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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.