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Finding the Fourth Proportional to 147,330.65, 203,317.71 and 83,668.91

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Solution

The fourth proportional to 147,330.65, 203,317.71 and 83,668.91 is: 115,463.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,330.65 : 203,317.71 = 83,668.91 : x
  2. Step 2: Convert to fraction form
    147,330.65/203,317.71 = 83,668.91/x
  3. Step 3: Cross multiply
    147,330.65x = 203,317.71 × 83,668.91
  4. Step 4: Simplify right side
    147,330.65x = 17,011,370,162.81
  5. Step 5: Solve for x
    x = 17,011,370,162.81/147,330.65
  6. Step 6: Final answer
    x = 115,463.90

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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.