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Finding the Fourth Proportional to 145,391.22, 200,603.79 and 84,927.15

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Solution

The fourth proportional to 145,391.22, 200,603.79 and 84,927.15 is: 117,178.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,391.22 : 200,603.79 = 84,927.15 : x
  2. Step 2: Convert to fraction form
    145,391.22/200,603.79 = 84,927.15/x
  3. Step 3: Cross multiply
    145,391.22x = 200,603.79 × 84,927.15
  4. Step 4: Simplify right side
    145,391.22x = 17,036,708,163.90
  5. Step 5: Solve for x
    x = 17,036,708,163.90/145,391.22
  6. Step 6: Final answer
    x = 117,178.38

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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.