Home / 145,186.35-217,899.60-74,161.50

Finding the Fourth Proportional to 145,186.35, 217,899.60 and 74,161.50

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Solution

The fourth proportional to 145,186.35, 217,899.60 and 74,161.50 is: 111,303.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,186.35 : 217,899.60 = 74,161.50 : x
  2. Step 2: Convert to fraction form
    145,186.35/217,899.60 = 74,161.50/x
  3. Step 3: Cross multiply
    145,186.35x = 217,899.60 × 74,161.50
  4. Step 4: Simplify right side
    145,186.35x = 16,159,761,185.40
  5. Step 5: Solve for x
    x = 16,159,761,185.40/145,186.35
  6. Step 6: Final answer
    x = 111,303.58

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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.