Home / 105,175.40-145,142.76-57,429.08

Finding the Fourth Proportional to 105,175.40, 145,142.76 and 57,429.08

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Solution

The fourth proportional to 105,175.40, 145,142.76 and 57,429.08 is: 79,252.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,175.40 : 145,142.76 = 57,429.08 : x
  2. Step 2: Convert to fraction form
    105,175.40/145,142.76 = 57,429.08/x
  3. Step 3: Cross multiply
    105,175.40x = 145,142.76 × 57,429.08
  4. Step 4: Simplify right side
    105,175.40x = 8,335,415,175.46
  5. Step 5: Solve for x
    x = 8,335,415,175.46/105,175.40
  6. Step 6: Final answer
    x = 79,252.52

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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.