Home / 103,886.26-143,362.56-56,139.46

Finding the Fourth Proportional to 103,886.26, 143,362.56 and 56,139.46

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Solution

The fourth proportional to 103,886.26, 143,362.56 and 56,139.46 is: 77,472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,886.26 : 143,362.56 = 56,139.46 : x
  2. Step 2: Convert to fraction form
    103,886.26/143,362.56 = 56,139.46/x
  3. Step 3: Cross multiply
    103,886.26x = 143,362.56 × 56,139.46
  4. Step 4: Simplify right side
    103,886.26x = 8,048,296,702.62
  5. Step 5: Solve for x
    x = 8,048,296,702.62/103,886.26
  6. Step 6: Final answer
    x = 77,472.20

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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.