Home / 145,112.26-200,243.93-81,437.75

Finding the Fourth Proportional to 145,112.26, 200,243.93 and 81,437.75

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Solution

The fourth proportional to 145,112.26, 200,243.93 and 81,437.75 is: 112,377.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,112.26 : 200,243.93 = 81,437.75 : x
  2. Step 2: Convert to fraction form
    145,112.26/200,243.93 = 81,437.75/x
  3. Step 3: Cross multiply
    145,112.26x = 200,243.93 × 81,437.75
  4. Step 4: Simplify right side
    145,112.26x = 16,307,414,703.17
  5. Step 5: Solve for x
    x = 16,307,414,703.17/145,112.26
  6. Step 6: Final answer
    x = 112,377.93

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1.5x scale

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.