Home / 109,507.87-151,120.65-61,761.07

Finding the Fourth Proportional to 109,507.87, 151,120.65 and 61,761.07

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Solution

The fourth proportional to 109,507.87, 151,120.65 and 61,761.07 is: 85,230.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,507.87 : 151,120.65 = 61,761.07 : x
  2. Step 2: Convert to fraction form
    109,507.87/151,120.65 = 61,761.07/x
  3. Step 3: Cross multiply
    109,507.87x = 151,120.65 × 61,761.07
  4. Step 4: Simplify right side
    109,507.87x = 9,333,373,043.10
  5. Step 5: Solve for x
    x = 9,333,373,043.10/109,507.87
  6. Step 6: Final answer
    x = 85,230.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.