Home / 345,774.16-518,661.36-109,140.80

Finding the Fourth Proportional to 345,774.16, 518,661.36 and 109,140.80

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Solution

The fourth proportional to 345,774.16, 518,661.36 and 109,140.80 is: 163,711.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,774.16 : 518,661.36 = 109,140.80 : x
  2. Step 2: Convert to fraction form
    345,774.16/518,661.36 = 109,140.80/x
  3. Step 3: Cross multiply
    345,774.16x = 518,661.36 × 109,140.80
  4. Step 4: Simplify right side
    345,774.16x = 56,607,115,759.49
  5. Step 5: Solve for x
    x = 56,607,115,759.49/345,774.16
  6. Step 6: Final answer
    x = 163,711.24

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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.