Home / 105,455.07-145,527.99-57,708.43

Finding the Fourth Proportional to 105,455.07, 145,527.99 and 57,708.43

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Solution

The fourth proportional to 105,455.07, 145,527.99 and 57,708.43 is: 79,637.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,455.07 : 145,527.99 = 57,708.43 : x
  2. Step 2: Convert to fraction form
    105,455.07/145,527.99 = 57,708.43/x
  3. Step 3: Cross multiply
    105,455.07x = 145,527.99 × 57,708.43
  4. Step 4: Simplify right side
    105,455.07x = 8,398,191,823.96
  5. Step 5: Solve for x
    x = 8,398,191,823.96/105,455.07
  6. Step 6: Final answer
    x = 79,637.63

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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.