Home / 147,988.80-221,999.40-143,323.20

Finding the Fourth Proportional to 147,988.80, 221,999.40 and 143,323.20

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Solution

The fourth proportional to 147,988.80, 221,999.40 and 143,323.20 is: 215,000.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,988.80 : 221,999.40 = 143,323.20 : x
  2. Step 2: Convert to fraction form
    147,988.80/221,999.40 = 143,323.20/x
  3. Step 3: Cross multiply
    147,988.80x = 221,999.40 × 143,323.20
  4. Step 4: Simplify right side
    147,988.80x = 31,817,664,406.08
  5. Step 5: Solve for x
    x = 31,817,664,406.08/147,988.80
  6. Step 6: Final answer
    x = 215,000.49

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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.