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Finding the Fourth Proportional to 153,651.97, 212,022.60 and 93,237.31

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Solution

The fourth proportional to 153,651.97, 212,022.60 and 93,237.31 is: 128,657.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,651.97 : 212,022.60 = 93,237.31 : x
  2. Step 2: Convert to fraction form
    153,651.97/212,022.60 = 93,237.31/x
  3. Step 3: Cross multiply
    153,651.97x = 212,022.60 × 93,237.31
  4. Step 4: Simplify right side
    153,651.97x = 19,768,416,798.59
  5. Step 5: Solve for x
    x = 19,768,416,798.59/153,651.97
  6. Step 6: Final answer
    x = 128,657.10

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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.