Home / 161,430.48-242,143.11-72,621.18

Finding the Fourth Proportional to 161,430.48, 242,143.11 and 72,621.18

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Solution

The fourth proportional to 161,430.48, 242,143.11 and 72,621.18 is: 108,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,430.48 : 242,143.11 = 72,621.18 : x
  2. Step 2: Convert to fraction form
    161,430.48/242,143.11 = 72,621.18/x
  3. Step 3: Cross multiply
    161,430.48x = 242,143.11 × 72,621.18
  4. Step 4: Simplify right side
    161,430.48x = 17,584,718,377.07
  5. Step 5: Solve for x
    x = 17,584,718,377.07/161,430.48
  6. Step 6: Final answer
    x = 108,930.60

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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.