Home / 131,125.86-180,944.37-77,408.10

Finding the Fourth Proportional to 131,125.86, 180,944.37 and 77,408.10

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Solution

The fourth proportional to 131,125.86, 180,944.37 and 77,408.10 is: 106,817.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,125.86 : 180,944.37 = 77,408.10 : x
  2. Step 2: Convert to fraction form
    131,125.86/180,944.37 = 77,408.10/x
  3. Step 3: Cross multiply
    131,125.86x = 180,944.37 × 77,408.10
  4. Step 4: Simplify right side
    131,125.86x = 14,006,559,887.40
  5. Step 5: Solve for x
    x = 14,006,559,887.40/131,125.86
  6. Step 6: Final answer
    x = 106,817.68

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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.