Home / 156,745.90-235,118.85-133,126.30

Finding the Fourth Proportional to 156,745.90, 235,118.85 and 133,126.30

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Solution

The fourth proportional to 156,745.90, 235,118.85 and 133,126.30 is: 199,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,745.90 : 235,118.85 = 133,126.30 : x
  2. Step 2: Convert to fraction form
    156,745.90/235,118.85 = 133,126.30/x
  3. Step 3: Cross multiply
    156,745.90x = 235,118.85 × 133,126.30
  4. Step 4: Simplify right side
    156,745.90x = 31,300,502,560.76
  5. Step 5: Solve for x
    x = 31,300,502,560.76/156,745.90
  6. Step 6: Final answer
    x = 199,689.45

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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.