Home / 145,024.21-217,527.54-86,234.01

Finding the Fourth Proportional to 145,024.21, 217,527.54 and 86,234.01

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Solution

The fourth proportional to 145,024.21, 217,527.54 and 86,234.01 is: 129,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,024.21 : 217,527.54 = 86,234.01 : x
  2. Step 2: Convert to fraction form
    145,024.21/217,527.54 = 86,234.01/x
  3. Step 3: Cross multiply
    145,024.21x = 217,527.54 × 86,234.01
  4. Step 4: Simplify right side
    145,024.21x = 18,758,272,059.64
  5. Step 5: Solve for x
    x = 18,758,272,059.64/145,024.21
  6. Step 6: Final answer
    x = 129,345.80

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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.