Home / 105,135.12-145,073.70-59,818.86

Finding the Fourth Proportional to 105,135.12, 145,073.70 and 59,818.86

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Solution

The fourth proportional to 105,135.12, 145,073.70 and 59,818.86 is: 82,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,135.12 : 145,073.70 = 59,818.86 : x
  2. Step 2: Convert to fraction form
    105,135.12/145,073.70 = 59,818.86/x
  3. Step 3: Cross multiply
    105,135.12x = 145,073.70 × 59,818.86
  4. Step 4: Simplify right side
    105,135.12x = 8,678,143,349.98
  5. Step 5: Solve for x
    x = 8,678,143,349.98/105,135.12
  6. Step 6: Final answer
    x = 82,542.76

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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.