Home / 189,735.40-284,603.10-71,433.28

Finding the Fourth Proportional to 189,735.40, 284,603.10 and 71,433.28

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Solution

The fourth proportional to 189,735.40, 284,603.10 and 71,433.28 is: 107,149.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,735.40 : 284,603.10 = 71,433.28 : x
  2. Step 2: Convert to fraction form
    189,735.40/284,603.10 = 71,433.28/x
  3. Step 3: Cross multiply
    189,735.40x = 284,603.10 × 71,433.28
  4. Step 4: Simplify right side
    189,735.40x = 20,330,132,931.17
  5. Step 5: Solve for x
    x = 20,330,132,931.17/189,735.40
  6. Step 6: Final answer
    x = 107,149.92

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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.