Home / 103,300.59-142,569.09-57,981.27

Finding the Fourth Proportional to 103,300.59, 142,569.09 and 57,981.27

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Solution

The fourth proportional to 103,300.59, 142,569.09 and 57,981.27 is: 80,022.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,300.59 : 142,569.09 = 57,981.27 : x
  2. Step 2: Convert to fraction form
    103,300.59/142,569.09 = 57,981.27/x
  3. Step 3: Cross multiply
    103,300.59x = 142,569.09 × 57,981.27
  4. Step 4: Simplify right side
    103,300.59x = 8,266,336,900.94
  5. Step 5: Solve for x
    x = 8,266,336,900.94/103,300.59
  6. Step 6: Final answer
    x = 80,022.17

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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.