Home / 103,986.83-143,501.91-56,240.12

Finding the Fourth Proportional to 103,986.83, 143,501.91 and 56,240.12

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Solution

The fourth proportional to 103,986.83, 143,501.91 and 56,240.12 is: 77,611.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,986.83 : 143,501.91 = 56,240.12 : x
  2. Step 2: Convert to fraction form
    103,986.83/143,501.91 = 56,240.12/x
  3. Step 3: Cross multiply
    103,986.83x = 143,501.91 × 56,240.12
  4. Step 4: Simplify right side
    103,986.83x = 8,070,564,638.63
  5. Step 5: Solve for x
    x = 8,070,564,638.63/103,986.83
  6. Step 6: Final answer
    x = 77,611.41

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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.