Home / 151,376.12-208,915.38-83,400.04

Finding the Fourth Proportional to 151,376.12, 208,915.38 and 83,400.04

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Solution

The fourth proportional to 151,376.12, 208,915.38 and 83,400.04 is: 115,101.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,376.12 : 208,915.38 = 83,400.04 : x
  2. Step 2: Convert to fraction form
    151,376.12/208,915.38 = 83,400.04/x
  3. Step 3: Cross multiply
    151,376.12x = 208,915.38 × 83,400.04
  4. Step 4: Simplify right side
    151,376.12x = 17,423,551,048.62
  5. Step 5: Solve for x
    x = 17,423,551,048.62/151,376.12
  6. Step 6: Final answer
    x = 115,101.05

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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.