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Finding the Fourth Proportional to 210,718.04, 316,077.37 and 86,059.04

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Solution

The fourth proportional to 210,718.04, 316,077.37 and 86,059.04 is: 129,088.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,718.04 : 316,077.37 = 86,059.04 : x
  2. Step 2: Convert to fraction form
    210,718.04/316,077.37 = 86,059.04/x
  3. Step 3: Cross multiply
    210,718.04x = 316,077.37 × 86,059.04
  4. Step 4: Simplify right side
    210,718.04x = 27,201,313,447.54
  5. Step 5: Solve for x
    x = 27,201,313,447.54/210,718.04
  6. Step 6: Final answer
    x = 129,088.68

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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.