Home / 112,784.94-169,259.36-90,863.10

Finding the Fourth Proportional to 112,784.94, 169,259.36 and 90,863.10

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Solution

The fourth proportional to 112,784.94, 169,259.36 and 90,863.10 is: 136,360.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,784.94 : 169,259.36 = 90,863.10 : x
  2. Step 2: Convert to fraction form
    112,784.94/169,259.36 = 90,863.10/x
  3. Step 3: Cross multiply
    112,784.94x = 169,259.36 × 90,863.10
  4. Step 4: Simplify right side
    112,784.94x = 15,379,429,699.30
  5. Step 5: Solve for x
    x = 15,379,429,699.30/112,784.94
  6. Step 6: Final answer
    x = 136,360.67

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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.