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Finding the Fourth Proportional to 110,994.39, 153,120.32 and 72,743.76

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Solution

The fourth proportional to 110,994.39, 153,120.32 and 72,743.76 is: 100,352.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,994.39 : 153,120.32 = 72,743.76 : x
  2. Step 2: Convert to fraction form
    110,994.39/153,120.32 = 72,743.76/x
  3. Step 3: Cross multiply
    110,994.39x = 153,120.32 × 72,743.76
  4. Step 4: Simplify right side
    110,994.39x = 11,138,547,445.48
  5. Step 5: Solve for x
    x = 11,138,547,445.48/110,994.39
  6. Step 6: Final answer
    x = 100,352.35

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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.