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Finding the Fourth Proportional to 99,114.60, 136,707.48 and 90,964.45

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Solution

The fourth proportional to 99,114.60, 136,707.48 and 90,964.45 is: 125,466.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,114.60 : 136,707.48 = 90,964.45 : x
  2. Step 2: Convert to fraction form
    99,114.60/136,707.48 = 90,964.45/x
  3. Step 3: Cross multiply
    99,114.60x = 136,707.48 × 90,964.45
  4. Step 4: Simplify right side
    99,114.60x = 12,435,520,729.09
  5. Step 5: Solve for x
    x = 12,435,520,729.09/99,114.60
  6. Step 6: Final answer
    x = 125,466.08

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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.