Home / 105,285.87-145,294.56-57,539.22

Finding the Fourth Proportional to 105,285.87, 145,294.56 and 57,539.22

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Solution

The fourth proportional to 105,285.87, 145,294.56 and 57,539.22 is: 79,404.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,285.87 : 145,294.56 = 57,539.22 : x
  2. Step 2: Convert to fraction form
    105,285.87/145,294.56 = 57,539.22/x
  3. Step 3: Cross multiply
    105,285.87x = 145,294.56 × 57,539.22
  4. Step 4: Simplify right side
    105,285.87x = 8,360,135,652.64
  5. Step 5: Solve for x
    x = 8,360,135,652.64/105,285.87
  6. Step 6: Final answer
    x = 79,404.16

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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.