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Finding the Fourth Proportional to 125,384.69, 173,030.86 and 71,670.86

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Solution

The fourth proportional to 125,384.69, 173,030.86 and 71,670.86 is: 98,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,384.69 : 173,030.86 = 71,670.86 : x
  2. Step 2: Convert to fraction form
    125,384.69/173,030.86 = 71,670.86/x
  3. Step 3: Cross multiply
    125,384.69x = 173,030.86 × 71,670.86
  4. Step 4: Simplify right side
    125,384.69x = 12,401,270,184.39
  5. Step 5: Solve for x
    x = 12,401,270,184.39/125,384.69
  6. Step 6: Final answer
    x = 98,905.78

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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.