Home / 103,631.08-143,007.76-58,311.60

Finding the Fourth Proportional to 103,631.08, 143,007.76 and 58,311.60

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Solution

The fourth proportional to 103,631.08, 143,007.76 and 58,311.60 is: 80,468.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,631.08 : 143,007.76 = 58,311.60 : x
  2. Step 2: Convert to fraction form
    103,631.08/143,007.76 = 58,311.60/x
  3. Step 3: Cross multiply
    103,631.08x = 143,007.76 × 58,311.60
  4. Step 4: Simplify right side
    103,631.08x = 8,339,011,298.02
  5. Step 5: Solve for x
    x = 8,339,011,298.02/103,631.08
  6. Step 6: Final answer
    x = 80,468.25

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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.