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Finding the Fourth Proportional to 153,253.46, 211,487.74 and 86,185.46

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Solution

The fourth proportional to 153,253.46, 211,487.74 and 86,185.46 is: 118,934.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,253.46 : 211,487.74 = 86,185.46 : x
  2. Step 2: Convert to fraction form
    153,253.46/211,487.74 = 86,185.46/x
  3. Step 3: Cross multiply
    153,253.46x = 211,487.74 × 86,185.46
  4. Step 4: Simplify right side
    153,253.46x = 18,227,166,883.36
  5. Step 5: Solve for x
    x = 18,227,166,883.36/153,253.46
  6. Step 6: Final answer
    x = 118,934.79

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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.