Home / 115,913.80-173,870.70-89,669.80

Finding the Fourth Proportional to 115,913.80, 173,870.70 and 89,669.80

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Solution

The fourth proportional to 115,913.80, 173,870.70 and 89,669.80 is: 134,504.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,913.80 : 173,870.70 = 89,669.80 : x
  2. Step 2: Convert to fraction form
    115,913.80/173,870.70 = 89,669.80/x
  3. Step 3: Cross multiply
    115,913.80x = 173,870.70 × 89,669.80
  4. Step 4: Simplify right side
    115,913.80x = 15,590,950,894.86
  5. Step 5: Solve for x
    x = 15,590,950,894.86/115,913.80
  6. Step 6: Final answer
    x = 134,504.70

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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.