Home / 103,121.52-142,307.64-58,409.52

Finding the Fourth Proportional to 103,121.52, 142,307.64 and 58,409.52

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Solution

The fourth proportional to 103,121.52, 142,307.64 and 58,409.52 is: 80,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,121.52 : 142,307.64 = 58,409.52 : x
  2. Step 2: Convert to fraction form
    103,121.52/142,307.64 = 58,409.52/x
  3. Step 3: Cross multiply
    103,121.52x = 142,307.64 × 58,409.52
  4. Step 4: Simplify right side
    103,121.52x = 8,312,120,944.73
  5. Step 5: Solve for x
    x = 8,312,120,944.73/103,121.52
  6. Step 6: Final answer
    x = 80,605.10

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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.