Home / 161,567.90-242,351.85-128,106.80

Finding the Fourth Proportional to 161,567.90, 242,351.85 and 128,106.80

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Solution

The fourth proportional to 161,567.90, 242,351.85 and 128,106.80 is: 192,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,567.90 : 242,351.85 = 128,106.80 : x
  2. Step 2: Convert to fraction form
    161,567.90/242,351.85 = 128,106.80/x
  3. Step 3: Cross multiply
    161,567.90x = 242,351.85 × 128,106.80
  4. Step 4: Simplify right side
    161,567.90x = 31,046,919,977.58
  5. Step 5: Solve for x
    x = 31,046,919,977.58/161,567.90
  6. Step 6: Final answer
    x = 192,160.20

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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.