Home / 138,948.21-208,417.46-58,934.79

Finding the Fourth Proportional to 138,948.21, 208,417.46 and 58,934.79

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Solution

The fourth proportional to 138,948.21, 208,417.46 and 58,934.79 is: 88,400.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,948.21 : 208,417.46 = 58,934.79 : x
  2. Step 2: Convert to fraction form
    138,948.21/208,417.46 = 58,934.79/x
  3. Step 3: Cross multiply
    138,948.21x = 208,417.46 × 58,934.79
  4. Step 4: Simplify right side
    138,948.21x = 12,283,038,942.76
  5. Step 5: Solve for x
    x = 12,283,038,942.76/138,948.21
  6. Step 6: Final answer
    x = 88,400.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.