Home / 147,438.72-203,466-83,779.98

Finding the Fourth Proportional to 147,438.72, 203,466 and 83,779.98

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Solution

The fourth proportional to 147,438.72, 203,466 and 83,779.98 is: 115,616.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,438.72 : 203,466 = 83,779.98 : x
  2. Step 2: Convert to fraction form
    147,438.72/203,466 = 83,779.98/x
  3. Step 3: Cross multiply
    147,438.72x = 203,466 × 83,779.98
  4. Step 4: Simplify right side
    147,438.72x = 17,046,377,410.68
  5. Step 5: Solve for x
    x = 17,046,377,410.68/147,438.72
  6. Step 6: Final answer
    x = 115,616.69

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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.