Home / 145,409.91-200,663.70-81,747.69

Finding the Fourth Proportional to 145,409.91, 200,663.70 and 81,747.69

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Solution

The fourth proportional to 145,409.91, 200,663.70 and 81,747.69 is: 112,810.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,409.91 : 200,663.70 = 81,747.69 : x
  2. Step 2: Convert to fraction form
    145,409.91/200,663.70 = 81,747.69/x
  3. Step 3: Cross multiply
    145,409.91x = 200,663.70 × 81,747.69
  4. Step 4: Simplify right side
    145,409.91x = 16,403,793,941.85
  5. Step 5: Solve for x
    x = 16,403,793,941.85/145,409.91
  6. Step 6: Final answer
    x = 112,810.70

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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.