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Finding the Fourth Proportional to 153,245.49, 211,474.74 and 85,262.58

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Solution

The fourth proportional to 153,245.49, 211,474.74 and 85,262.58 is: 117,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,245.49 : 211,474.74 = 85,262.58 : x
  2. Step 2: Convert to fraction form
    153,245.49/211,474.74 = 85,262.58/x
  3. Step 3: Cross multiply
    153,245.49x = 211,474.74 × 85,262.58
  4. Step 4: Simplify right side
    153,245.49x = 18,030,881,937.23
  5. Step 5: Solve for x
    x = 18,030,881,937.23/153,245.49
  6. Step 6: Final answer
    x = 117,660.11

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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.