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Finding the Fourth Proportional to 115,368.49, 159,280.59 and 88,459.28

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Solution

The fourth proportional to 115,368.49, 159,280.59 and 88,459.28 is: 122,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,368.49 : 159,280.59 = 88,459.28 : x
  2. Step 2: Convert to fraction form
    115,368.49/159,280.59 = 88,459.28/x
  3. Step 3: Cross multiply
    115,368.49x = 159,280.59 × 88,459.28
  4. Step 4: Simplify right side
    115,368.49x = 14,089,846,309.38
  5. Step 5: Solve for x
    x = 14,089,846,309.38/115,368.49
  6. Step 6: Final answer
    x = 122,129.07

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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.