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Finding the Fourth Proportional to 86,899, 130,059.19 and 65,722.36

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Solution

The fourth proportional to 86,899, 130,059.19 and 65,722.36 is: 98,364.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,899 : 130,059.19 = 65,722.36 : x
  2. Step 2: Convert to fraction form
    86,899/130,059.19 = 65,722.36/x
  3. Step 3: Cross multiply
    86,899x = 130,059.19 × 65,722.36
  4. Step 4: Simplify right side
    86,899x = 8,547,796,906.49
  5. Step 5: Solve for x
    x = 8,547,796,906.49/86,899
  6. Step 6: Final answer
    x = 98,364.73

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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.