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Finding the Fourth Proportional to 162,071.65, 223,720.17 and 121,901.41

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Solution

The fourth proportional to 162,071.65, 223,720.17 and 121,901.41 is: 168,270.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,071.65 : 223,720.17 = 121,901.41 : x
  2. Step 2: Convert to fraction form
    162,071.65/223,720.17 = 121,901.41/x
  3. Step 3: Cross multiply
    162,071.65x = 223,720.17 × 121,901.41
  4. Step 4: Simplify right side
    162,071.65x = 27,271,803,558.93
  5. Step 5: Solve for x
    x = 27,271,803,558.93/162,071.65
  6. Step 6: Final answer
    x = 168,270.05

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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.