Home / 101,739.89-140,401.85-56,415.23

Finding the Fourth Proportional to 101,739.89, 140,401.85 and 56,415.23

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Solution

The fourth proportional to 101,739.89, 140,401.85 and 56,415.23 is: 77,853.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,739.89 : 140,401.85 = 56,415.23 : x
  2. Step 2: Convert to fraction form
    101,739.89/140,401.85 = 56,415.23/x
  3. Step 3: Cross multiply
    101,739.89x = 140,401.85 × 56,415.23
  4. Step 4: Simplify right side
    101,739.89x = 7,920,802,378.10
  5. Step 5: Solve for x
    x = 7,920,802,378.10/101,739.89
  6. Step 6: Final answer
    x = 77,853.46

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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.