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Finding the Fourth Proportional to 104,387.92, 144,051.39 and 56,640.28

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Solution

The fourth proportional to 104,387.92, 144,051.39 and 56,640.28 is: 78,161.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,387.92 : 144,051.39 = 56,640.28 : x
  2. Step 2: Convert to fraction form
    104,387.92/144,051.39 = 56,640.28/x
  3. Step 3: Cross multiply
    104,387.92x = 144,051.39 × 56,640.28
  4. Step 4: Simplify right side
    104,387.92x = 8,159,111,063.99
  5. Step 5: Solve for x
    x = 8,159,111,063.99/104,387.92
  6. Step 6: Final answer
    x = 78,161.45

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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.