Home / 136,762.22-188,749.71-76,345.40

Finding the Fourth Proportional to 136,762.22, 188,749.71 and 76,345.40

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Solution

The fourth proportional to 136,762.22, 188,749.71 and 76,345.40 is: 105,366.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,762.22 : 188,749.71 = 76,345.40 : x
  2. Step 2: Convert to fraction form
    136,762.22/188,749.71 = 76,345.40/x
  3. Step 3: Cross multiply
    136,762.22x = 188,749.71 × 76,345.40
  4. Step 4: Simplify right side
    136,762.22x = 14,410,172,581.71
  5. Step 5: Solve for x
    x = 14,410,172,581.71/136,762.22
  6. Step 6: Final answer
    x = 105,366.62

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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.