Home / 145,235.07-200,420.39-80,702.63

Finding the Fourth Proportional to 145,235.07, 200,420.39 and 80,702.63

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Solution

The fourth proportional to 145,235.07, 200,420.39 and 80,702.63 is: 111,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,235.07 : 200,420.39 = 80,702.63 : x
  2. Step 2: Convert to fraction form
    145,235.07/200,420.39 = 80,702.63/x
  3. Step 3: Cross multiply
    145,235.07x = 200,420.39 × 80,702.63
  4. Step 4: Simplify right side
    145,235.07x = 16,174,452,578.63
  5. Step 5: Solve for x
    x = 16,174,452,578.63/145,235.07
  6. Step 6: Final answer
    x = 111,367.40

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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.