Home / 105,499.20-145,656.81-94,149.21

Finding the Fourth Proportional to 105,499.20, 145,656.81 and 94,149.21

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Solution

The fourth proportional to 105,499.20, 145,656.81 and 94,149.21 is: 129,986.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,499.20 : 145,656.81 = 94,149.21 : x
  2. Step 2: Convert to fraction form
    105,499.20/145,656.81 = 94,149.21/x
  3. Step 3: Cross multiply
    105,499.20x = 145,656.81 × 94,149.21
  4. Step 4: Simplify right side
    105,499.20x = 13,713,473,592.62
  5. Step 5: Solve for x
    x = 13,713,473,592.62/105,499.20
  6. Step 6: Final answer
    x = 129,986.52

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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.