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Finding the Fourth Proportional to 86,901.30, 130,449.15 and 67,266.90

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Solution

The fourth proportional to 86,901.30, 130,449.15 and 67,266.90 is: 100,975.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,901.30 : 130,449.15 = 67,266.90 : x
  2. Step 2: Convert to fraction form
    86,901.30/130,449.15 = 67,266.90/x
  3. Step 3: Cross multiply
    86,901.30x = 130,449.15 × 67,266.90
  4. Step 4: Simplify right side
    86,901.30x = 8,774,909,928.14
  5. Step 5: Solve for x
    x = 8,774,909,928.14/86,901.30
  6. Step 6: Final answer
    x = 100,975.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.