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Finding the Fourth Proportional to 121,124.80, 167,156.16 and 75,788.32

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Solution

The fourth proportional to 121,124.80, 167,156.16 and 75,788.32 is: 104,590.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,124.80 : 167,156.16 = 75,788.32 : x
  2. Step 2: Convert to fraction form
    121,124.80/167,156.16 = 75,788.32/x
  3. Step 3: Cross multiply
    121,124.80x = 167,156.16 × 75,788.32
  4. Step 4: Simplify right side
    121,124.80x = 12,668,484,544.05
  5. Step 5: Solve for x
    x = 12,668,484,544.05/121,124.80
  6. Step 6: Final answer
    x = 104,590.34

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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.