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Finding the Fourth Proportional to 106,659.20, 147,144.12 and 74,848.88

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Solution

The fourth proportional to 106,659.20, 147,144.12 and 74,848.88 is: 103,259.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,659.20 : 147,144.12 = 74,848.88 : x
  2. Step 2: Convert to fraction form
    106,659.20/147,144.12 = 74,848.88/x
  3. Step 3: Cross multiply
    106,659.20x = 147,144.12 × 74,848.88
  4. Step 4: Simplify right side
    106,659.20x = 11,013,572,580.59
  5. Step 5: Solve for x
    x = 11,013,572,580.59/106,659.20
  6. Step 6: Final answer
    x = 103,259.47

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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.