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Finding the Fourth Proportional to 181,720.80, 272,354.40 and 93,009.60

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Solution

The fourth proportional to 181,720.80, 272,354.40 and 93,009.60 is: 139,398.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,720.80 : 272,354.40 = 93,009.60 : x
  2. Step 2: Convert to fraction form
    181,720.80/272,354.40 = 93,009.60/x
  3. Step 3: Cross multiply
    181,720.80x = 272,354.40 × 93,009.60
  4. Step 4: Simplify right side
    181,720.80x = 25,331,573,802.24
  5. Step 5: Solve for x
    x = 25,331,573,802.24/181,720.80
  6. Step 6: Final answer
    x = 139,398.32

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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.