Home / 145,185.44-200,320.85-84,721.57

Finding the Fourth Proportional to 145,185.44, 200,320.85 and 84,721.57

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Solution

The fourth proportional to 145,185.44, 200,320.85 and 84,721.57 is: 116,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,185.44 : 200,320.85 = 84,721.57 : x
  2. Step 2: Convert to fraction form
    145,185.44/200,320.85 = 84,721.57/x
  3. Step 3: Cross multiply
    145,185.44x = 200,320.85 × 84,721.57
  4. Step 4: Simplify right side
    145,185.44x = 16,971,495,490.52
  5. Step 5: Solve for x
    x = 16,971,495,490.52/145,185.44
  6. Step 6: Final answer
    x = 116,895.30

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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.