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Finding the Fourth Proportional to 104,036.88, 143,569.86 and 56,289.20

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Solution

The fourth proportional to 104,036.88, 143,569.86 and 56,289.20 is: 77,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,036.88 : 143,569.86 = 56,289.20 : x
  2. Step 2: Convert to fraction form
    104,036.88/143,569.86 = 56,289.20/x
  3. Step 3: Cross multiply
    104,036.88x = 143,569.86 × 56,289.20
  4. Step 4: Simplify right side
    104,036.88x = 8,081,432,563.51
  5. Step 5: Solve for x
    x = 8,081,432,563.51/104,036.88
  6. Step 6: Final answer
    x = 77,678.54

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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.