Home / 155,400.32-214,486.40-98,800.64

Finding the Fourth Proportional to 155,400.32, 214,486.40 and 98,800.64

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Solution

The fourth proportional to 155,400.32, 214,486.40 and 98,800.64 is: 136,366.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,400.32 : 214,486.40 = 98,800.64 : x
  2. Step 2: Convert to fraction form
    155,400.32/214,486.40 = 98,800.64/x
  3. Step 3: Cross multiply
    155,400.32x = 214,486.40 × 98,800.64
  4. Step 4: Simplify right side
    155,400.32x = 21,191,393,591.30
  5. Step 5: Solve for x
    x = 21,191,393,591.30/155,400.32
  6. Step 6: Final answer
    x = 136,366.47

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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.