Home / 103,215.72-142,467.93-67,411.29

Finding the Fourth Proportional to 103,215.72, 142,467.93 and 67,411.29

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Solution

The fourth proportional to 103,215.72, 142,467.93 and 67,411.29 is: 93,047.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,215.72 : 142,467.93 = 67,411.29 : x
  2. Step 2: Convert to fraction form
    103,215.72/142,467.93 = 67,411.29/x
  3. Step 3: Cross multiply
    103,215.72x = 142,467.93 × 67,411.29
  4. Step 4: Simplify right side
    103,215.72x = 9,603,946,944.93
  5. Step 5: Solve for x
    x = 9,603,946,944.93/103,215.72
  6. Step 6: Final answer
    x = 93,047.33

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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.