Home / 101,187,421.72-139,638,612.54-54,777,641.56

Finding the Fourth Proportional to 101,187,421.72, 139,638,612.54 and 54,777,641.56

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Solution

The fourth proportional to 101,187,421.72, 139,638,612.54 and 54,777,641.56 is: 75,593,129.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,187,421.72 : 139,638,612.54 = 54,777,641.56 : x
  2. Step 2: Convert to fraction form
    101,187,421.72/139,638,612.54 = 54,777,641.56/x
  3. Step 3: Cross multiply
    101,187,421.72x = 139,638,612.54 × 54,777,641.56
  4. Step 4: Simplify right side
    101,187,421.72x = 7,649,073,865,651,841
  5. Step 5: Solve for x
    x = 7,649,073,865,651,841/101,187,421.72
  6. Step 6: Final answer
    x = 75,593,129.42

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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.