Home / 103,886.06-143,362.80-56,139.38

Finding the Fourth Proportional to 103,886.06, 143,362.80 and 56,139.38

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Solution

The fourth proportional to 103,886.06, 143,362.80 and 56,139.38 is: 77,472.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,886.06 : 143,362.80 = 56,139.38 : x
  2. Step 2: Convert to fraction form
    103,886.06/143,362.80 = 56,139.38/x
  3. Step 3: Cross multiply
    103,886.06x = 143,362.80 × 56,139.38
  4. Step 4: Simplify right side
    103,886.06x = 8,048,298,707.06
  5. Step 5: Solve for x
    x = 8,048,298,707.06/103,886.06
  6. Step 6: Final answer
    x = 77,472.36

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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.