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Finding the Fourth Proportional to 115,374.60, 172,964.70 and 59,970.60

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Solution

The fourth proportional to 115,374.60, 172,964.70 and 59,970.60 is: 89,905.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,374.60 : 172,964.70 = 59,970.60 : x
  2. Step 2: Convert to fraction form
    115,374.60/172,964.70 = 59,970.60/x
  3. Step 3: Cross multiply
    115,374.60x = 172,964.70 × 59,970.60
  4. Step 4: Simplify right side
    115,374.60x = 10,372,796,837.82
  5. Step 5: Solve for x
    x = 10,372,796,837.82/115,374.60
  6. Step 6: Final answer
    x = 89,905.38

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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.