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Finding the Fourth Proportional to 107,142.08, 147,858.08 and 58,740.80

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Solution

The fourth proportional to 107,142.08, 147,858.08 and 58,740.80 is: 81,063.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,142.08 : 147,858.08 = 58,740.80 : x
  2. Step 2: Convert to fraction form
    107,142.08/147,858.08 = 58,740.80/x
  3. Step 3: Cross multiply
    107,142.08x = 147,858.08 × 58,740.80
  4. Step 4: Simplify right side
    107,142.08x = 8,685,300,872.67
  5. Step 5: Solve for x
    x = 8,685,300,872.67/107,142.08
  6. Step 6: Final answer
    x = 81,063.40

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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.