Home / 147,580.80-221,630.40-142,915.20

Finding the Fourth Proportional to 147,580.80, 221,630.40 and 142,915.20

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Solution

The fourth proportional to 147,580.80, 221,630.40 and 142,915.20 is: 214,623.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,580.80 : 221,630.40 = 142,915.20 : x
  2. Step 2: Convert to fraction form
    147,580.80/221,630.40 = 142,915.20/x
  3. Step 3: Cross multiply
    147,580.80x = 221,630.40 × 142,915.20
  4. Step 4: Simplify right side
    147,580.80x = 31,674,352,942.08
  5. Step 5: Solve for x
    x = 31,674,352,942.08/147,580.80
  6. Step 6: Final answer
    x = 214,623.81

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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.