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Finding the Fourth Proportional to 157,788, 236,686.76 and 61,721.36

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Solution

The fourth proportional to 157,788, 236,686.76 and 61,721.36 is: 92,583.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,788 : 236,686.76 = 61,721.36 : x
  2. Step 2: Convert to fraction form
    157,788/236,686.76 = 61,721.36/x
  3. Step 3: Cross multiply
    157,788x = 236,686.76 × 61,721.36
  4. Step 4: Simplify right side
    157,788x = 14,608,628,348.18
  5. Step 5: Solve for x
    x = 14,608,628,348.18/157,788
  6. Step 6: Final answer
    x = 92,583.90

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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.