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Finding the Fourth Proportional to 128,603.94, 192,915.12 and 44,362.86

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Solution

The fourth proportional to 128,603.94, 192,915.12 and 44,362.86 is: 66,547.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,603.94 : 192,915.12 = 44,362.86 : x
  2. Step 2: Convert to fraction form
    128,603.94/192,915.12 = 44,362.86/x
  3. Step 3: Cross multiply
    128,603.94x = 192,915.12 × 44,362.86
  4. Step 4: Simplify right side
    128,603.94x = 8,558,266,460.44
  5. Step 5: Solve for x
    x = 8,558,266,460.44/128,603.94
  6. Step 6: Final answer
    x = 66,547.47

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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.