Home / 97,999.20-147,075.60-45,415.20

Finding the Fourth Proportional to 97,999.20, 147,075.60 and 45,415.20

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Solution

The fourth proportional to 97,999.20, 147,075.60 and 45,415.20 is: 68,158.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,999.20 : 147,075.60 = 45,415.20 : x
  2. Step 2: Convert to fraction form
    97,999.20/147,075.60 = 45,415.20/x
  3. Step 3: Cross multiply
    97,999.20x = 147,075.60 × 45,415.20
  4. Step 4: Simplify right side
    97,999.20x = 6,679,467,789.12
  5. Step 5: Solve for x
    x = 6,679,467,789.12/97,999.20
  6. Step 6: Final answer
    x = 68,158.39

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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.