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Finding the Fourth Proportional to 145,618.66, 218,437.37 and 45,782.72

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Solution

The fourth proportional to 145,618.66, 218,437.37 and 45,782.72 is: 68,677.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,618.66 : 218,437.37 = 45,782.72 : x
  2. Step 2: Convert to fraction form
    145,618.66/218,437.37 = 45,782.72/x
  3. Step 3: Cross multiply
    145,618.66x = 218,437.37 × 45,782.72
  4. Step 4: Simplify right side
    145,618.66x = 10,000,656,948.25
  5. Step 5: Solve for x
    x = 10,000,656,948.25/145,618.66
  6. Step 6: Final answer
    x = 68,677.03

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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.