Home / 105,708.84-145,878.24-57,961.20

Finding the Fourth Proportional to 105,708.84, 145,878.24 and 57,961.20

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Solution

The fourth proportional to 105,708.84, 145,878.24 and 57,961.20 is: 79,986.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,708.84 : 145,878.24 = 57,961.20 : x
  2. Step 2: Convert to fraction form
    105,708.84/145,878.24 = 57,961.20/x
  3. Step 3: Cross multiply
    105,708.84x = 145,878.24 × 57,961.20
  4. Step 4: Simplify right side
    105,708.84x = 8,455,277,844.29
  5. Step 5: Solve for x
    x = 8,455,277,844.29/105,708.84
  6. Step 6: Final answer
    x = 79,986.48

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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.