Home / 105,231.20-145,222.18-57,485.34

Finding the Fourth Proportional to 105,231.20, 145,222.18 and 57,485.34

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Solution

The fourth proportional to 105,231.20, 145,222.18 and 57,485.34 is: 79,331.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,231.20 : 145,222.18 = 57,485.34 : x
  2. Step 2: Convert to fraction form
    105,231.20/145,222.18 = 57,485.34/x
  3. Step 3: Cross multiply
    105,231.20x = 145,222.18 × 57,485.34
  4. Step 4: Simplify right side
    105,231.20x = 8,348,146,392.84
  5. Step 5: Solve for x
    x = 8,348,146,392.84/105,231.20
  6. Step 6: Final answer
    x = 79,331.48

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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.