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Finding the Fourth Proportional to 152,405.85, 210,344.04 and 91,985.07

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Solution

The fourth proportional to 152,405.85, 210,344.04 and 91,985.07 is: 126,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,405.85 : 210,344.04 = 91,985.07 : x
  2. Step 2: Convert to fraction form
    152,405.85/210,344.04 = 91,985.07/x
  3. Step 3: Cross multiply
    152,405.85x = 210,344.04 × 91,985.07
  4. Step 4: Simplify right side
    152,405.85x = 19,348,511,243.48
  5. Step 5: Solve for x
    x = 19,348,511,243.48/152,405.85
  6. Step 6: Final answer
    x = 126,953.86

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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.