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Finding the Fourth Proportional to 155,045.80, 213,986.51 and 94,651.53

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Solution

The fourth proportional to 155,045.80, 213,986.51 and 94,651.53 is: 130,633.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,045.80 : 213,986.51 = 94,651.53 : x
  2. Step 2: Convert to fraction form
    155,045.80/213,986.51 = 94,651.53/x
  3. Step 3: Cross multiply
    155,045.80x = 213,986.51 × 94,651.53
  4. Step 4: Simplify right side
    155,045.80x = 20,254,150,570.86
  5. Step 5: Solve for x
    x = 20,254,150,570.86/155,045.80
  6. Step 6: Final answer
    x = 130,633.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.