Home / 119,120.72-178,643.16-39,140.12

Finding the Fourth Proportional to 119,120.72, 178,643.16 and 39,140.12

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Solution

The fourth proportional to 119,120.72, 178,643.16 and 39,140.12 is: 58,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,120.72 : 178,643.16 = 39,140.12 : x
  2. Step 2: Convert to fraction form
    119,120.72/178,643.16 = 39,140.12/x
  3. Step 3: Cross multiply
    119,120.72x = 178,643.16 × 39,140.12
  4. Step 4: Simplify right side
    119,120.72x = 6,992,114,719.58
  5. Step 5: Solve for x
    x = 6,992,114,719.58/119,120.72
  6. Step 6: Final answer
    x = 58,697.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.