Home / 107,109-147,748.86-66,803.40

Finding the Fourth Proportional to 107,109, 147,748.86 and 66,803.40

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Solution

The fourth proportional to 107,109, 147,748.86 and 66,803.40 is: 92,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,109 : 147,748.86 = 66,803.40 : x
  2. Step 2: Convert to fraction form
    107,109/147,748.86 = 66,803.40/x
  3. Step 3: Cross multiply
    107,109x = 147,748.86 × 66,803.40
  4. Step 4: Simplify right side
    107,109x = 9,870,126,194.12
  5. Step 5: Solve for x
    x = 9,870,126,194.12/107,109
  6. Step 6: Final answer
    x = 92,150.30

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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.