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Finding the Fourth Proportional to 145,513.80, 218,270.70 and 110,521.80

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Solution

The fourth proportional to 145,513.80, 218,270.70 and 110,521.80 is: 165,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,513.80 : 218,270.70 = 110,521.80 : x
  2. Step 2: Convert to fraction form
    145,513.80/218,270.70 = 110,521.80/x
  3. Step 3: Cross multiply
    145,513.80x = 218,270.70 × 110,521.80
  4. Step 4: Simplify right side
    145,513.80x = 24,123,670,651.26
  5. Step 5: Solve for x
    x = 24,123,670,651.26/145,513.80
  6. Step 6: Final answer
    x = 165,782.70

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1.5x scale

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.