Home / 100,921.20-151,381.80-48,303.60

Finding the Fourth Proportional to 100,921.20, 151,381.80 and 48,303.60

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Solution

The fourth proportional to 100,921.20, 151,381.80 and 48,303.60 is: 72,455.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,921.20 : 151,381.80 = 48,303.60 : x
  2. Step 2: Convert to fraction form
    100,921.20/151,381.80 = 48,303.60/x
  3. Step 3: Cross multiply
    100,921.20x = 151,381.80 × 48,303.60
  4. Step 4: Simplify right side
    100,921.20x = 7,312,285,914.48
  5. Step 5: Solve for x
    x = 7,312,285,914.48/100,921.20
  6. Step 6: Final answer
    x = 72,455.40

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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.