Home / 109,431.34-151,043.93-71,295.55

Finding the Fourth Proportional to 109,431.34, 151,043.93 and 71,295.55

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Solution

The fourth proportional to 109,431.34, 151,043.93 and 71,295.55 is: 98,406.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,431.34 : 151,043.93 = 71,295.55 : x
  2. Step 2: Convert to fraction form
    109,431.34/151,043.93 = 71,295.55/x
  3. Step 3: Cross multiply
    109,431.34x = 151,043.93 × 71,295.55
  4. Step 4: Simplify right side
    109,431.34x = 10,768,760,063.51
  5. Step 5: Solve for x
    x = 10,768,760,063.51/109,431.34
  6. Step 6: Final answer
    x = 98,406.54

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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.