Home / 101,731.02-140,389.11-56,412.20

Finding the Fourth Proportional to 101,731.02, 140,389.11 and 56,412.20

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Solution

The fourth proportional to 101,731.02, 140,389.11 and 56,412.20 is: 77,849.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,731.02 : 140,389.11 = 56,412.20 : x
  2. Step 2: Convert to fraction form
    101,731.02/140,389.11 = 56,412.20/x
  3. Step 3: Cross multiply
    101,731.02x = 140,389.11 × 56,412.20
  4. Step 4: Simplify right side
    101,731.02x = 7,919,657,849.20
  5. Step 5: Solve for x
    x = 7,919,657,849.20/101,731.02
  6. Step 6: Final answer
    x = 77,849.00

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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.