Home / 102,918.25-142,029.12-57,601.23

Finding the Fourth Proportional to 102,918.25, 142,029.12 and 57,601.23

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Solution

The fourth proportional to 102,918.25, 142,029.12 and 57,601.23 is: 79,490.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,918.25 : 142,029.12 = 57,601.23 : x
  2. Step 2: Convert to fraction form
    102,918.25/142,029.12 = 57,601.23/x
  3. Step 3: Cross multiply
    102,918.25x = 142,029.12 × 57,601.23
  4. Step 4: Simplify right side
    102,918.25x = 8,181,051,529.21
  5. Step 5: Solve for x
    x = 8,181,051,529.21/102,918.25
  6. Step 6: Final answer
    x = 79,490.77

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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.