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Finding the Fourth Proportional to 100,618.16, 138,994.76 and 95,303.76

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Solution

The fourth proportional to 100,618.16, 138,994.76 and 95,303.76 is: 131,653.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,618.16 : 138,994.76 = 95,303.76 : x
  2. Step 2: Convert to fraction form
    100,618.16/138,994.76 = 95,303.76/x
  3. Step 3: Cross multiply
    100,618.16x = 138,994.76 × 95,303.76
  4. Step 4: Simplify right side
    100,618.16x = 13,246,723,248.30
  5. Step 5: Solve for x
    x = 13,246,723,248.30/100,618.16
  6. Step 6: Final answer
    x = 131,653.40

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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.