Home / 142,197.39-196,188.12-81,746.28

Finding the Fourth Proportional to 142,197.39, 196,188.12 and 81,746.28

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Solution

The fourth proportional to 142,197.39, 196,188.12 and 81,746.28 is: 112,784.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,197.39 : 196,188.12 = 81,746.28 : x
  2. Step 2: Convert to fraction form
    142,197.39/196,188.12 = 81,746.28/x
  3. Step 3: Cross multiply
    142,197.39x = 196,188.12 × 81,746.28
  4. Step 4: Simplify right side
    142,197.39x = 16,037,648,990.19
  5. Step 5: Solve for x
    x = 16,037,648,990.19/142,197.39
  6. Step 6: Final answer
    x = 112,784.41

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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.