Home / 145,185.43-200,320.84-84,721.57

Finding the Fourth Proportional to 145,185.43, 200,320.84 and 84,721.57

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Solution

The fourth proportional to 145,185.43, 200,320.84 and 84,721.57 is: 116,895.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,185.43 : 200,320.84 = 84,721.57 : x
  2. Step 2: Convert to fraction form
    145,185.43/200,320.84 = 84,721.57/x
  3. Step 3: Cross multiply
    145,185.43x = 200,320.84 × 84,721.57
  4. Step 4: Simplify right side
    145,185.43x = 16,971,496,068.52
  5. Step 5: Solve for x
    x = 16,971,496,068.52/145,185.43
  6. Step 6: Final answer
    x = 116,895.31

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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.