Home / 121,938.64-168,281.86-68,220.44

Finding the Fourth Proportional to 121,938.64, 168,281.86 and 68,220.44

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Solution

The fourth proportional to 121,938.64, 168,281.86 and 68,220.44 is: 94,147.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,938.64 : 168,281.86 = 68,220.44 : x
  2. Step 2: Convert to fraction form
    121,938.64/168,281.86 = 68,220.44/x
  3. Step 3: Cross multiply
    121,938.64x = 168,281.86 × 68,220.44
  4. Step 4: Simplify right side
    121,938.64x = 11,480,262,533.22
  5. Step 5: Solve for x
    x = 11,480,262,533.22/121,938.64
  6. Step 6: Final answer
    x = 94,147.86

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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.