Home / 197,612.80-272,742.61-112,729.87

Finding the Fourth Proportional to 197,612.80, 272,742.61 and 112,729.87

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Solution

The fourth proportional to 197,612.80, 272,742.61 and 112,729.87 is: 155,588.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,612.80 : 272,742.61 = 112,729.87 : x
  2. Step 2: Convert to fraction form
    197,612.80/272,742.61 = 112,729.87/x
  3. Step 3: Cross multiply
    197,612.80x = 272,742.61 × 112,729.87
  4. Step 4: Simplify right side
    197,612.80x = 30,746,238,968.76
  5. Step 5: Solve for x
    x = 30,746,238,968.76/197,612.80
  6. Step 6: Final answer
    x = 155,588.30

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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.