Home / 143,670.12-215,538.88-43,830.28

Finding the Fourth Proportional to 143,670.12, 215,538.88 and 43,830.28

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Solution

The fourth proportional to 143,670.12, 215,538.88 and 43,830.28 is: 65,755.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,670.12 : 215,538.88 = 43,830.28 : x
  2. Step 2: Convert to fraction form
    143,670.12/215,538.88 = 43,830.28/x
  3. Step 3: Cross multiply
    143,670.12x = 215,538.88 × 43,830.28
  4. Step 4: Simplify right side
    143,670.12x = 9,447,128,812.86
  5. Step 5: Solve for x
    x = 9,447,128,812.86/143,670.12
  6. Step 6: Final answer
    x = 65,755.70

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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.