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Finding the Fourth Proportional to 210,041.82, 315,103.74 and 67,922.40

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Solution

The fourth proportional to 210,041.82, 315,103.74 and 67,922.40 is: 101,896.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,041.82 : 315,103.74 = 67,922.40 : x
  2. Step 2: Convert to fraction form
    210,041.82/315,103.74 = 67,922.40/x
  3. Step 3: Cross multiply
    210,041.82x = 315,103.74 × 67,922.40
  4. Step 4: Simplify right side
    210,041.82x = 21,402,602,269.78
  5. Step 5: Solve for x
    x = 21,402,602,269.78/210,041.82
  6. Step 6: Final answer
    x = 101,896.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.