Home / 103,421.16-142,721.75-58,101.06

Finding the Fourth Proportional to 103,421.16, 142,721.75 and 58,101.06

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Solution

The fourth proportional to 103,421.16, 142,721.75 and 58,101.06 is: 80,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,421.16 : 142,721.75 = 58,101.06 : x
  2. Step 2: Convert to fraction form
    103,421.16/142,721.75 = 58,101.06/x
  3. Step 3: Cross multiply
    103,421.16x = 142,721.75 × 58,101.06
  4. Step 4: Simplify right side
    103,421.16x = 8,292,284,960.06
  5. Step 5: Solve for x
    x = 8,292,284,960.06/103,421.16
  6. Step 6: Final answer
    x = 80,179.77

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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.