Home / 144,328.08-199,166.48-78,915.71

Finding the Fourth Proportional to 144,328.08, 199,166.48 and 78,915.71

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Solution

The fourth proportional to 144,328.08, 199,166.48 and 78,915.71 is: 108,900.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,328.08 : 199,166.48 = 78,915.71 : x
  2. Step 2: Convert to fraction form
    144,328.08/199,166.48 = 78,915.71/x
  3. Step 3: Cross multiply
    144,328.08x = 199,166.48 × 78,915.71
  4. Step 4: Simplify right side
    144,328.08x = 15,717,363,509.21
  5. Step 5: Solve for x
    x = 15,717,363,509.21/144,328.08
  6. Step 6: Final answer
    x = 108,900.25

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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.