Home / 112,878.40-169,317.60-112,100.80

Finding the Fourth Proportional to 112,878.40, 169,317.60 and 112,100.80

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Solution

The fourth proportional to 112,878.40, 169,317.60 and 112,100.80 is: 168,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,878.40 : 169,317.60 = 112,100.80 : x
  2. Step 2: Convert to fraction form
    112,878.40/169,317.60 = 112,100.80/x
  3. Step 3: Cross multiply
    112,878.40x = 169,317.60 × 112,100.80
  4. Step 4: Simplify right side
    112,878.40x = 18,980,638,414.08
  5. Step 5: Solve for x
    x = 18,980,638,414.08/112,878.40
  6. Step 6: Final answer
    x = 168,151.20

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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.