Home / 210,639.94-290,683.15-115,147.02

Finding the Fourth Proportional to 210,639.94, 290,683.15 and 115,147.02

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Solution

The fourth proportional to 210,639.94, 290,683.15 and 115,147.02 is: 158,902.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,639.94 : 290,683.15 = 115,147.02 : x
  2. Step 2: Convert to fraction form
    210,639.94/290,683.15 = 115,147.02/x
  3. Step 3: Cross multiply
    210,639.94x = 290,683.15 × 115,147.02
  4. Step 4: Simplify right side
    210,639.94x = 33,471,298,486.71
  5. Step 5: Solve for x
    x = 33,471,298,486.71/210,639.94
  6. Step 6: Final answer
    x = 158,902.91

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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.