Home / 112,697.86-155,334.09-89,964

Finding the Fourth Proportional to 112,697.86, 155,334.09 and 89,964

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Solution

The fourth proportional to 112,697.86, 155,334.09 and 89,964 is: 123,999.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,697.86 : 155,334.09 = 89,964 : x
  2. Step 2: Convert to fraction form
    112,697.86/155,334.09 = 89,964/x
  3. Step 3: Cross multiply
    112,697.86x = 155,334.09 × 89,964
  4. Step 4: Simplify right side
    112,697.86x = 13,974,476,072.76
  5. Step 5: Solve for x
    x = 13,974,476,072.76/112,697.86
  6. Step 6: Final answer
    x = 123,999.48

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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.