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Finding the Fourth Proportional to 107,457.80, 161,186.70 and 102,907.40

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Solution

The fourth proportional to 107,457.80, 161,186.70 and 102,907.40 is: 154,361.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,457.80 : 161,186.70 = 102,907.40 : x
  2. Step 2: Convert to fraction form
    107,457.80/161,186.70 = 102,907.40/x
  3. Step 3: Cross multiply
    107,457.80x = 161,186.70 × 102,907.40
  4. Step 4: Simplify right side
    107,457.80x = 16,587,304,211.58
  5. Step 5: Solve for x
    x = 16,587,304,211.58/107,457.80
  6. Step 6: Final answer
    x = 154,361.10

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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.