Home / 145,378.34-200,538.42-90,835.91

Finding the Fourth Proportional to 145,378.34, 200,538.42 and 90,835.91

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Solution

The fourth proportional to 145,378.34, 200,538.42 and 90,835.91 is: 125,301.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,378.34 : 200,538.42 = 90,835.91 : x
  2. Step 2: Convert to fraction form
    145,378.34/200,538.42 = 90,835.91/x
  3. Step 3: Cross multiply
    145,378.34x = 200,538.42 × 90,835.91
  4. Step 4: Simplify right side
    145,378.34x = 18,216,089,790.31
  5. Step 5: Solve for x
    x = 18,216,089,790.31/145,378.34
  6. Step 6: Final answer
    x = 125,301.27

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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.