Home / 145,185.69-200,321.19-84,721.82

Finding the Fourth Proportional to 145,185.69, 200,321.19 and 84,721.82

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Solution

The fourth proportional to 145,185.69, 200,321.19 and 84,721.82 is: 116,895.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,185.69 : 200,321.19 = 84,721.82 : x
  2. Step 2: Convert to fraction form
    145,185.69/200,321.19 = 84,721.82/x
  3. Step 3: Cross multiply
    145,185.69x = 200,321.19 × 84,721.82
  4. Step 4: Simplify right side
    145,185.69x = 16,971,574,799.76
  5. Step 5: Solve for x
    x = 16,971,574,799.76/145,185.69
  6. Step 6: Final answer
    x = 116,895.64

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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.