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Finding the Fourth Proportional to 153,168.78, 229,675.41 and 69,991.50

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Solution

The fourth proportional to 153,168.78, 229,675.41 and 69,991.50 is: 104,951.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,168.78 : 229,675.41 = 69,991.50 : x
  2. Step 2: Convert to fraction form
    153,168.78/229,675.41 = 69,991.50/x
  3. Step 3: Cross multiply
    153,168.78x = 229,675.41 × 69,991.50
  4. Step 4: Simplify right side
    153,168.78x = 16,075,326,459.02
  5. Step 5: Solve for x
    x = 16,075,326,459.02/153,168.78
  6. Step 6: Final answer
    x = 104,951.72

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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.