Home / 103,490.42-142,818.05-58,165.75

Finding the Fourth Proportional to 103,490.42, 142,818.05 and 58,165.75

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Solution

The fourth proportional to 103,490.42, 142,818.05 and 58,165.75 is: 80,269.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,490.42 : 142,818.05 = 58,165.75 : x
  2. Step 2: Convert to fraction form
    103,490.42/142,818.05 = 58,165.75/x
  3. Step 3: Cross multiply
    103,490.42x = 142,818.05 × 58,165.75
  4. Step 4: Simplify right side
    103,490.42x = 8,307,118,991.79
  5. Step 5: Solve for x
    x = 8,307,118,991.79/103,490.42
  6. Step 6: Final answer
    x = 80,269.45

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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.