Home / 147,970.80-221,972.40-143,305.20

Finding the Fourth Proportional to 147,970.80, 221,972.40 and 143,305.20

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Solution

The fourth proportional to 147,970.80, 221,972.40 and 143,305.20 is: 214,973.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,970.80 : 221,972.40 = 143,305.20 : x
  2. Step 2: Convert to fraction form
    147,970.80/221,972.40 = 143,305.20/x
  3. Step 3: Cross multiply
    147,970.80x = 221,972.40 × 143,305.20
  4. Step 4: Simplify right side
    147,970.80x = 31,809,799,176.48
  5. Step 5: Solve for x
    x = 31,809,799,176.48/147,970.80
  6. Step 6: Final answer
    x = 214,973.49

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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.