Home / 103,809.16-142,803.30-91,004.68

Finding the Fourth Proportional to 103,809.16, 142,803.30 and 91,004.68

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Solution

The fourth proportional to 103,809.16, 142,803.30 and 91,004.68 is: 125,189.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,809.16 : 142,803.30 = 91,004.68 : x
  2. Step 2: Convert to fraction form
    103,809.16/142,803.30 = 91,004.68/x
  3. Step 3: Cross multiply
    103,809.16x = 142,803.30 × 91,004.68
  4. Step 4: Simplify right side
    103,809.16x = 12,995,768,619.44
  5. Step 5: Solve for x
    x = 12,995,768,619.44/103,809.16
  6. Step 6: Final answer
    x = 125,189.04

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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.