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Finding the Fourth Proportional to 107,642.08, 148,522.80 and 65,202.40

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Solution

The fourth proportional to 107,642.08, 148,522.80 and 65,202.40 is: 89,965.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,642.08 : 148,522.80 = 65,202.40 : x
  2. Step 2: Convert to fraction form
    107,642.08/148,522.80 = 65,202.40/x
  3. Step 3: Cross multiply
    107,642.08x = 148,522.80 × 65,202.40
  4. Step 4: Simplify right side
    107,642.08x = 9,684,043,014.72
  5. Step 5: Solve for x
    x = 9,684,043,014.72/107,642.08
  6. Step 6: Final answer
    x = 89,965.22

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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.