Home / 147,136.71-203,055.33-86,709.90

Finding the Fourth Proportional to 147,136.71, 203,055.33 and 86,709.90

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Solution

The fourth proportional to 147,136.71, 203,055.33 and 86,709.90 is: 119,663.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,136.71 : 203,055.33 = 86,709.90 : x
  2. Step 2: Convert to fraction form
    147,136.71/203,055.33 = 86,709.90/x
  3. Step 3: Cross multiply
    147,136.71x = 203,055.33 × 86,709.90
  4. Step 4: Simplify right side
    147,136.71x = 17,606,907,358.77
  5. Step 5: Solve for x
    x = 17,606,907,358.77/147,136.71
  6. Step 6: Final answer
    x = 119,663.59

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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.