Home / 145,979.20-218,623.20-98,977.60

Finding the Fourth Proportional to 145,979.20, 218,623.20 and 98,977.60

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Solution

The fourth proportional to 145,979.20, 218,623.20 and 98,977.60 is: 148,232.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,979.20 : 218,623.20 = 98,977.60 : x
  2. Step 2: Convert to fraction form
    145,979.20/218,623.20 = 98,977.60/x
  3. Step 3: Cross multiply
    145,979.20x = 218,623.20 × 98,977.60
  4. Step 4: Simplify right side
    145,979.20x = 21,638,799,640.32
  5. Step 5: Solve for x
    x = 21,638,799,640.32/145,979.20
  6. Step 6: Final answer
    x = 148,232.07

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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.