Home / 101,318.12-151,285.33-90,719.72

Finding the Fourth Proportional to 101,318.12, 151,285.33 and 90,719.72

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Solution

The fourth proportional to 101,318.12, 151,285.33 and 90,719.72 is: 135,460.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,318.12 : 151,285.33 = 90,719.72 : x
  2. Step 2: Convert to fraction form
    101,318.12/151,285.33 = 90,719.72/x
  3. Step 3: Cross multiply
    101,318.12x = 151,285.33 × 90,719.72
  4. Step 4: Simplify right side
    101,318.12x = 13,724,562,777.71
  5. Step 5: Solve for x
    x = 13,724,562,777.71/101,318.12
  6. Step 6: Final answer
    x = 135,460.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.