Home / 142,166.72-196,233.51-87,735.53

Finding the Fourth Proportional to 142,166.72, 196,233.51 and 87,735.53

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Solution

The fourth proportional to 142,166.72, 196,233.51 and 87,735.53 is: 121,101.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,166.72 : 196,233.51 = 87,735.53 : x
  2. Step 2: Convert to fraction form
    142,166.72/196,233.51 = 87,735.53/x
  3. Step 3: Cross multiply
    142,166.72x = 196,233.51 × 87,735.53
  4. Step 4: Simplify right side
    142,166.72x = 17,216,651,823.20
  5. Step 5: Solve for x
    x = 17,216,651,823.20/142,166.72
  6. Step 6: Final answer
    x = 121,101.84

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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.