Home / 105,455.25-145,528.26-57,708.63

Finding the Fourth Proportional to 105,455.25, 145,528.26 and 57,708.63

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Solution

The fourth proportional to 105,455.25, 145,528.26 and 57,708.63 is: 79,637.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,455.25 : 145,528.26 = 57,708.63 : x
  2. Step 2: Convert to fraction form
    105,455.25/145,528.26 = 57,708.63/x
  3. Step 3: Cross multiply
    105,455.25x = 145,528.26 × 57,708.63
  4. Step 4: Simplify right side
    105,455.25x = 8,398,236,510.88
  5. Step 5: Solve for x
    x = 8,398,236,510.88/105,455.25
  6. Step 6: Final answer
    x = 79,637.92

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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.