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Finding the Fourth Proportional to 103,178, 142,385.64 and 60,762.62

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Solution

The fourth proportional to 103,178, 142,385.64 and 60,762.62 is: 83,852.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,178 : 142,385.64 = 60,762.62 : x
  2. Step 2: Convert to fraction form
    103,178/142,385.64 = 60,762.62/x
  3. Step 3: Cross multiply
    103,178x = 142,385.64 × 60,762.62
  4. Step 4: Simplify right side
    103,178x = 8,651,724,536.78
  5. Step 5: Solve for x
    x = 8,651,724,536.78/103,178
  6. Step 6: Final answer
    x = 83,852.42

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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.