Home / 105,242.56-145,234.20-57,498.64

Finding the Fourth Proportional to 105,242.56, 145,234.20 and 57,498.64

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Solution

The fourth proportional to 105,242.56, 145,234.20 and 57,498.64 is: 79,347.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,242.56 : 145,234.20 = 57,498.64 : x
  2. Step 2: Convert to fraction form
    105,242.56/145,234.20 = 57,498.64/x
  3. Step 3: Cross multiply
    105,242.56x = 145,234.20 × 57,498.64
  4. Step 4: Simplify right side
    105,242.56x = 8,350,768,981.49
  5. Step 5: Solve for x
    x = 8,350,768,981.49/105,242.56
  6. Step 6: Final answer
    x = 79,347.83

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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.