Home / 112,785.45-169,161.47-68,400.29

Finding the Fourth Proportional to 112,785.45, 169,161.47 and 68,400.29

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Solution

The fourth proportional to 112,785.45, 169,161.47 and 68,400.29 is: 102,590.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,785.45 : 169,161.47 = 68,400.29 : x
  2. Step 2: Convert to fraction form
    112,785.45/169,161.47 = 68,400.29/x
  3. Step 3: Cross multiply
    112,785.45x = 169,161.47 × 68,400.29
  4. Step 4: Simplify right side
    112,785.45x = 11,570,692,417.02
  5. Step 5: Solve for x
    x = 11,570,692,417.02/112,785.45
  6. Step 6: Final answer
    x = 102,590.29

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1.5x scale

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.