Home / 190,421.10-285,631.61-78,024.60

Finding the Fourth Proportional to 190,421.10, 285,631.61 and 78,024.60

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Solution

The fourth proportional to 190,421.10, 285,631.61 and 78,024.60 is: 117,036.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,421.10 : 285,631.61 = 78,024.60 : x
  2. Step 2: Convert to fraction form
    190,421.10/285,631.61 = 78,024.60/x
  3. Step 3: Cross multiply
    190,421.10x = 285,631.61 × 78,024.60
  4. Step 4: Simplify right side
    190,421.10x = 22,286,291,727.48
  5. Step 5: Solve for x
    x = 22,286,291,727.48/190,421.10
  6. Step 6: Final answer
    x = 117,036.88

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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.