Home / 103,578.36-142,857.15-67,291.50

Finding the Fourth Proportional to 103,578.36, 142,857.15 and 67,291.50

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Solution

The fourth proportional to 103,578.36, 142,857.15 and 67,291.50 is: 92,809.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,578.36 : 142,857.15 = 67,291.50 : x
  2. Step 2: Convert to fraction form
    103,578.36/142,857.15 = 67,291.50/x
  3. Step 3: Cross multiply
    103,578.36x = 142,857.15 × 67,291.50
  4. Step 4: Simplify right side
    103,578.36x = 9,613,071,909.23
  5. Step 5: Solve for x
    x = 9,613,071,909.23/103,578.36
  6. Step 6: Final answer
    x = 92,809.66

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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.