Home / 145,890.38-218,858.90-61,651.35

Finding the Fourth Proportional to 145,890.38, 218,858.90 and 61,651.35

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Solution

The fourth proportional to 145,890.38, 218,858.90 and 61,651.35 is: 92,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,890.38 : 218,858.90 = 61,651.35 : x
  2. Step 2: Convert to fraction form
    145,890.38/218,858.90 = 61,651.35/x
  3. Step 3: Cross multiply
    145,890.38x = 218,858.90 × 61,651.35
  4. Step 4: Simplify right side
    145,890.38x = 13,492,946,336.26
  5. Step 5: Solve for x
    x = 13,492,946,336.26/145,890.38
  6. Step 6: Final answer
    x = 92,486.88

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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.