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Finding the Fourth Proportional to 158,696, 219,000.48 and 88,040

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Solution

The fourth proportional to 158,696, 219,000.48 and 88,040 is: 121,495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,696 : 219,000.48 = 88,040 : x
  2. Step 2: Convert to fraction form
    158,696/219,000.48 = 88,040/x
  3. Step 3: Cross multiply
    158,696x = 219,000.48 × 88,040
  4. Step 4: Simplify right side
    158,696x = 19,280,802,259.20
  5. Step 5: Solve for x
    x = 19,280,802,259.20/158,696
  6. Step 6: Final answer
    x = 121,495.20

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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.