Home / 230,136.10-317,578.95-128,165.86

Finding the Fourth Proportional to 230,136.10, 317,578.95 and 128,165.86

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Solution

The fourth proportional to 230,136.10, 317,578.95 and 128,165.86 is: 176,863.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,136.10 : 317,578.95 = 128,165.86 : x
  2. Step 2: Convert to fraction form
    230,136.10/317,578.95 = 128,165.86/x
  3. Step 3: Cross multiply
    230,136.10x = 317,578.95 × 128,165.86
  4. Step 4: Simplify right side
    230,136.10x = 40,702,779,244.65
  5. Step 5: Solve for x
    x = 40,702,779,244.65/230,136.10
  6. Step 6: Final answer
    x = 176,863.95

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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.