Home / 145,605.12-200,919.60-81,941.82

Finding the Fourth Proportional to 145,605.12, 200,919.60 and 81,941.82

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Solution

The fourth proportional to 145,605.12, 200,919.60 and 81,941.82 is: 113,071.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,605.12 : 200,919.60 = 81,941.82 : x
  2. Step 2: Convert to fraction form
    145,605.12/200,919.60 = 81,941.82/x
  3. Step 3: Cross multiply
    145,605.12x = 200,919.60 × 81,941.82
  4. Step 4: Simplify right side
    145,605.12x = 16,463,717,697.67
  5. Step 5: Solve for x
    x = 16,463,717,697.67/145,605.12
  6. Step 6: Final answer
    x = 113,071.01

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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.