Home / 145,239.06-200,425.91-80,706.63

Finding the Fourth Proportional to 145,239.06, 200,425.91 and 80,706.63

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Solution

The fourth proportional to 145,239.06, 200,425.91 and 80,706.63 is: 111,372.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,239.06 : 200,425.91 = 80,706.63 : x
  2. Step 2: Convert to fraction form
    145,239.06/200,425.91 = 80,706.63/x
  3. Step 3: Cross multiply
    145,239.06x = 200,425.91 × 80,706.63
  4. Step 4: Simplify right side
    145,239.06x = 16,175,699,357.25
  5. Step 5: Solve for x
    x = 16,175,699,357.25/145,239.06
  6. Step 6: Final answer
    x = 111,372.93

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1.5x scale

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.