Home / 101,317.12-151,283.84-90,718.72

Finding the Fourth Proportional to 101,317.12, 151,283.84 and 90,718.72

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Solution

The fourth proportional to 101,317.12, 151,283.84 and 90,718.72 is: 135,458.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,317.12 : 151,283.84 = 90,718.72 : x
  2. Step 2: Convert to fraction form
    101,317.12/151,283.84 = 90,718.72/x
  3. Step 3: Cross multiply
    101,317.12x = 151,283.84 × 90,718.72
  4. Step 4: Simplify right side
    101,317.12x = 13,724,276,321.48
  5. Step 5: Solve for x
    x = 13,724,276,321.48/101,317.12
  6. Step 6: Final answer
    x = 135,458.61

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1.5x scale

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.