Home / 189,501.12-284,101.74-71,159.28

Finding the Fourth Proportional to 189,501.12, 284,101.74 and 71,159.28

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Solution

The fourth proportional to 189,501.12, 284,101.74 and 71,159.28 is: 106,682.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,501.12 : 284,101.74 = 71,159.28 : x
  2. Step 2: Convert to fraction form
    189,501.12/284,101.74 = 71,159.28/x
  3. Step 3: Cross multiply
    189,501.12x = 284,101.74 × 71,159.28
  4. Step 4: Simplify right side
    189,501.12x = 20,216,475,265.15
  5. Step 5: Solve for x
    x = 20,216,475,265.15/189,501.12
  6. Step 6: Final answer
    x = 106,682.62

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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.