Home / 145,021.66-217,532.50-45,189.92

Finding the Fourth Proportional to 145,021.66, 217,532.50 and 45,189.92

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Solution

The fourth proportional to 145,021.66, 217,532.50 and 45,189.92 is: 67,784.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,021.66 : 217,532.50 = 45,189.92 : x
  2. Step 2: Convert to fraction form
    145,021.66/217,532.50 = 45,189.92/x
  3. Step 3: Cross multiply
    145,021.66x = 217,532.50 × 45,189.92
  4. Step 4: Simplify right side
    145,021.66x = 9,830,276,703.26
  5. Step 5: Solve for x
    x = 9,830,276,703.26/145,021.66
  6. Step 6: Final answer
    x = 67,784.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.