Home / 142,862-197,060.64-91,941.20

Finding the Fourth Proportional to 142,862, 197,060.64 and 91,941.20

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Solution

The fourth proportional to 142,862, 197,060.64 and 91,941.20 is: 126,821.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,862 : 197,060.64 = 91,941.20 : x
  2. Step 2: Convert to fraction form
    142,862/197,060.64 = 91,941.20/x
  3. Step 3: Cross multiply
    142,862x = 197,060.64 × 91,941.20
  4. Step 4: Simplify right side
    142,862x = 18,117,991,714.37
  5. Step 5: Solve for x
    x = 18,117,991,714.37/142,862
  6. Step 6: Final answer
    x = 126,821.63

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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.