Home / 142,083.75-196,061.61-78,417.45

Finding the Fourth Proportional to 142,083.75, 196,061.61 and 78,417.45

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Solution

The fourth proportional to 142,083.75, 196,061.61 and 78,417.45 is: 108,208.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,083.75 : 196,061.61 = 78,417.45 : x
  2. Step 2: Convert to fraction form
    142,083.75/196,061.61 = 78,417.45/x
  3. Step 3: Cross multiply
    142,083.75x = 196,061.61 × 78,417.45
  4. Step 4: Simplify right side
    142,083.75x = 15,374,650,518.79
  5. Step 5: Solve for x
    x = 15,374,650,518.79/142,083.75
  6. Step 6: Final answer
    x = 108,208.37

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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.