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Finding the Fourth Proportional to 105,750.08, 145,939.20 and 58,005.08

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Solution

The fourth proportional to 105,750.08, 145,939.20 and 58,005.08 is: 80,049.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,750.08 : 145,939.20 = 58,005.08 : x
  2. Step 2: Convert to fraction form
    105,750.08/145,939.20 = 58,005.08/x
  3. Step 3: Cross multiply
    105,750.08x = 145,939.20 × 58,005.08
  4. Step 4: Simplify right side
    105,750.08x = 8,465,214,971.14
  5. Step 5: Solve for x
    x = 8,465,214,971.14/105,750.08
  6. Step 6: Final answer
    x = 80,049.25

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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.