Home / 105,605.55-145,731.96-57,858.48

Finding the Fourth Proportional to 105,605.55, 145,731.96 and 57,858.48

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Solution

The fourth proportional to 105,605.55, 145,731.96 and 57,858.48 is: 79,842.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,605.55 : 145,731.96 = 57,858.48 : x
  2. Step 2: Convert to fraction form
    105,605.55/145,731.96 = 57,858.48/x
  3. Step 3: Cross multiply
    105,605.55x = 145,731.96 × 57,858.48
  4. Step 4: Simplify right side
    105,605.55x = 8,431,829,693.02
  5. Step 5: Solve for x
    x = 8,431,829,693.02/105,605.55
  6. Step 6: Final answer
    x = 79,842.68

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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.