Home / 103,985.25-143,499.74-56,238.60

Finding the Fourth Proportional to 103,985.25, 143,499.74 and 56,238.60

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Solution

The fourth proportional to 103,985.25, 143,499.74 and 56,238.60 is: 77,609.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,985.25 : 143,499.74 = 56,238.60 : x
  2. Step 2: Convert to fraction form
    103,985.25/143,499.74 = 56,238.60/x
  3. Step 3: Cross multiply
    103,985.25x = 143,499.74 × 56,238.60
  4. Step 4: Simplify right side
    103,985.25x = 8,070,224,477.96
  5. Step 5: Solve for x
    x = 8,070,224,477.96/103,985.25
  6. Step 6: Final answer
    x = 77,609.32

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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.