Home / 142,083.72-196,061.57-78,417.41

Finding the Fourth Proportional to 142,083.72, 196,061.57 and 78,417.41

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Solution

The fourth proportional to 142,083.72, 196,061.57 and 78,417.41 is: 108,208.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,083.72 : 196,061.57 = 78,417.41 : x
  2. Step 2: Convert to fraction form
    142,083.72/196,061.57 = 78,417.41/x
  3. Step 3: Cross multiply
    142,083.72x = 196,061.57 × 78,417.41
  4. Step 4: Simplify right side
    142,083.72x = 15,374,640,618.00
  5. Step 5: Solve for x
    x = 15,374,640,618.00/142,083.72
  6. Step 6: Final answer
    x = 108,208.32

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1.5x scale

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.