Home / 131,403.94-197,230.51-81,332.57

Finding the Fourth Proportional to 131,403.94, 197,230.51 and 81,332.57

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Solution

The fourth proportional to 131,403.94, 197,230.51 and 81,332.57 is: 122,075.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,403.94 : 197,230.51 = 81,332.57 : x
  2. Step 2: Convert to fraction form
    131,403.94/197,230.51 = 81,332.57/x
  3. Step 3: Cross multiply
    131,403.94x = 197,230.51 × 81,332.57
  4. Step 4: Simplify right side
    131,403.94x = 16,041,264,855.45
  5. Step 5: Solve for x
    x = 16,041,264,855.45/131,403.94
  6. Step 6: Final answer
    x = 122,075.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.