Home / 102,934.90-142,017.79-57,605.68

Finding the Fourth Proportional to 102,934.90, 142,017.79 and 57,605.68

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Solution

The fourth proportional to 102,934.90, 142,017.79 and 57,605.68 is: 79,477.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,934.90 : 142,017.79 = 57,605.68 : x
  2. Step 2: Convert to fraction form
    102,934.90/142,017.79 = 57,605.68/x
  3. Step 3: Cross multiply
    102,934.90x = 142,017.79 × 57,605.68
  4. Step 4: Simplify right side
    102,934.90x = 8,181,031,221.03
  5. Step 5: Solve for x
    x = 8,181,031,221.03/102,934.90
  6. Step 6: Final answer
    x = 79,477.72

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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.