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Finding the Fourth Proportional to 113,507.80, 170,261.70 and 107,517.40

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Solution

The fourth proportional to 113,507.80, 170,261.70 and 107,517.40 is: 161,276.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,507.80 : 170,261.70 = 107,517.40 : x
  2. Step 2: Convert to fraction form
    113,507.80/170,261.70 = 107,517.40/x
  3. Step 3: Cross multiply
    113,507.80x = 170,261.70 × 107,517.40
  4. Step 4: Simplify right side
    113,507.80x = 18,306,095,303.58
  5. Step 5: Solve for x
    x = 18,306,095,303.58/113,507.80
  6. Step 6: Final answer
    x = 161,276.10

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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.