Home / 123,548.20-170,368.32-105,702.28

Finding the Fourth Proportional to 123,548.20, 170,368.32 and 105,702.28

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Solution

The fourth proportional to 123,548.20, 170,368.32 and 105,702.28 is: 145,759.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,548.20 : 170,368.32 = 105,702.28 : x
  2. Step 2: Convert to fraction form
    123,548.20/170,368.32 = 105,702.28/x
  3. Step 3: Cross multiply
    123,548.20x = 170,368.32 × 105,702.28
  4. Step 4: Simplify right side
    123,548.20x = 18,008,319,863.77
  5. Step 5: Solve for x
    x = 18,008,319,863.77/123,548.20
  6. Step 6: Final answer
    x = 145,759.47

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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.