Home / 147,661.56-221,302.80-128,608.20

Finding the Fourth Proportional to 147,661.56, 221,302.80 and 128,608.20

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Solution

The fourth proportional to 147,661.56, 221,302.80 and 128,608.20 is: 192,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,661.56 : 221,302.80 = 128,608.20 : x
  2. Step 2: Convert to fraction form
    147,661.56/221,302.80 = 128,608.20/x
  3. Step 3: Cross multiply
    147,661.56x = 221,302.80 × 128,608.20
  4. Step 4: Simplify right side
    147,661.56x = 28,461,354,762.96
  5. Step 5: Solve for x
    x = 28,461,354,762.96/147,661.56
  6. Step 6: Final answer
    x = 192,747.22

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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.