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Finding the Fourth Proportional to 134,487, 185,529.78 and 86,755.74

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Solution

The fourth proportional to 134,487, 185,529.78 and 86,755.74 is: 119,682.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,487 : 185,529.78 = 86,755.74 : x
  2. Step 2: Convert to fraction form
    134,487/185,529.78 = 86,755.74/x
  3. Step 3: Cross multiply
    134,487x = 185,529.78 × 86,755.74
  4. Step 4: Simplify right side
    134,487x = 16,095,773,355.94
  5. Step 5: Solve for x
    x = 16,095,773,355.94/134,487
  6. Step 6: Final answer
    x = 119,682.75

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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.