Home / 145,242.80-217,558-66,423.36

Finding the Fourth Proportional to 145,242.80, 217,558 and 66,423.36

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Solution

The fourth proportional to 145,242.80, 217,558 and 66,423.36 is: 99,495.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,242.80 : 217,558 = 66,423.36 : x
  2. Step 2: Convert to fraction form
    145,242.80/217,558 = 66,423.36/x
  3. Step 3: Cross multiply
    145,242.80x = 217,558 × 66,423.36
  4. Step 4: Simplify right side
    145,242.80x = 14,450,933,354.88
  5. Step 5: Solve for x
    x = 14,450,933,354.88/145,242.80
  6. Step 6: Final answer
    x = 99,495.01

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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.