Home / 121,870.90-168,180.66-68,155.30

Finding the Fourth Proportional to 121,870.90, 168,180.66 and 68,155.30

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Solution

The fourth proportional to 121,870.90, 168,180.66 and 68,155.30 is: 94,053.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,870.90 : 168,180.66 = 68,155.30 : x
  2. Step 2: Convert to fraction form
    121,870.90/168,180.66 = 68,155.30/x
  3. Step 3: Cross multiply
    121,870.90x = 168,180.66 × 68,155.30
  4. Step 4: Simplify right side
    121,870.90x = 11,462,403,336.50
  5. Step 5: Solve for x
    x = 11,462,403,336.50/121,870.90
  6. Step 6: Final answer
    x = 94,053.65

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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.