Home / 209,081.76-288,512.01-118,419.63

Finding the Fourth Proportional to 209,081.76, 288,512.01 and 118,419.63

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Solution

The fourth proportional to 209,081.76, 288,512.01 and 118,419.63 is: 163,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,081.76 : 288,512.01 = 118,419.63 : x
  2. Step 2: Convert to fraction form
    209,081.76/288,512.01 = 118,419.63/x
  3. Step 3: Cross multiply
    209,081.76x = 288,512.01 × 118,419.63
  4. Step 4: Simplify right side
    209,081.76x = 34,165,485,474.76
  5. Step 5: Solve for x
    x = 34,165,485,474.76/209,081.76
  6. Step 6: Final answer
    x = 163,407.30

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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.