Home / 103,931.50-143,464.47-68,123.82

Finding the Fourth Proportional to 103,931.50, 143,464.47 and 68,123.82

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Solution

The fourth proportional to 103,931.50, 143,464.47 and 68,123.82 is: 94,036.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,931.50 : 143,464.47 = 68,123.82 : x
  2. Step 2: Convert to fraction form
    103,931.50/143,464.47 = 68,123.82/x
  3. Step 3: Cross multiply
    103,931.50x = 143,464.47 × 68,123.82
  4. Step 4: Simplify right side
    103,931.50x = 9,773,347,730.68
  5. Step 5: Solve for x
    x = 9,773,347,730.68/103,931.50
  6. Step 6: Final answer
    x = 94,036.43

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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.