Home / 121,973.12-168,328.08-75,416.12

Finding the Fourth Proportional to 121,973.12, 168,328.08 and 75,416.12

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Solution

The fourth proportional to 121,973.12, 168,328.08 and 75,416.12 is: 104,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,973.12 : 168,328.08 = 75,416.12 : x
  2. Step 2: Convert to fraction form
    121,973.12/168,328.08 = 75,416.12/x
  3. Step 3: Cross multiply
    121,973.12x = 168,328.08 × 75,416.12
  4. Step 4: Simplify right side
    121,973.12x = 12,694,650,680.65
  5. Step 5: Solve for x
    x = 12,694,650,680.65/121,973.12
  6. Step 6: Final answer
    x = 104,077.44

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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.