Home / 147,979.80-221,985.90-143,314.20

Finding the Fourth Proportional to 147,979.80, 221,985.90 and 143,314.20

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Solution

The fourth proportional to 147,979.80, 221,985.90 and 143,314.20 is: 214,986.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,979.80 : 221,985.90 = 143,314.20 : x
  2. Step 2: Convert to fraction form
    147,979.80/221,985.90 = 143,314.20/x
  3. Step 3: Cross multiply
    147,979.80x = 221,985.90 × 143,314.20
  4. Step 4: Simplify right side
    147,979.80x = 31,813,731,669.78
  5. Step 5: Solve for x
    x = 31,813,731,669.78/147,979.80
  6. Step 6: Final answer
    x = 214,986.99

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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.