Home / 101,011.38-139,387.90-55,689.22

Finding the Fourth Proportional to 101,011.38, 139,387.90 and 55,689.22

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Solution

The fourth proportional to 101,011.38, 139,387.90 and 55,689.22 is: 76,846.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,011.38 : 139,387.90 = 55,689.22 : x
  2. Step 2: Convert to fraction form
    101,011.38/139,387.90 = 55,689.22/x
  3. Step 3: Cross multiply
    101,011.38x = 139,387.90 × 55,689.22
  4. Step 4: Simplify right side
    101,011.38x = 7,762,403,428.44
  5. Step 5: Solve for x
    x = 7,762,403,428.44/101,011.38
  6. Step 6: Final answer
    x = 76,846.82

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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.