Home / 105,331.20-145,228.80-99,225.60

Finding the Fourth Proportional to 105,331.20, 145,228.80 and 99,225.60

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Solution

The fourth proportional to 105,331.20, 145,228.80 and 99,225.60 is: 136,810.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,331.20 : 145,228.80 = 99,225.60 : x
  2. Step 2: Convert to fraction form
    105,331.20/145,228.80 = 99,225.60/x
  3. Step 3: Cross multiply
    105,331.20x = 145,228.80 × 99,225.60
  4. Step 4: Simplify right side
    105,331.20x = 14,410,414,817.28
  5. Step 5: Solve for x
    x = 14,410,414,817.28/105,331.20
  6. Step 6: Final answer
    x = 136,810.51

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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.