Home / 122,328.96-168,889.65-81,550.52

Finding the Fourth Proportional to 122,328.96, 168,889.65 and 81,550.52

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Solution

The fourth proportional to 122,328.96, 168,889.65 and 81,550.52 is: 112,590.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,328.96 : 168,889.65 = 81,550.52 : x
  2. Step 2: Convert to fraction form
    122,328.96/168,889.65 = 81,550.52/x
  3. Step 3: Cross multiply
    122,328.96x = 168,889.65 × 81,550.52
  4. Step 4: Simplify right side
    122,328.96x = 13,773,038,780.12
  5. Step 5: Solve for x
    x = 13,773,038,780.12/122,328.96
  6. Step 6: Final answer
    x = 112,590.17

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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.