Home / 131,421.90-197,130-36,649.55

Finding the Fourth Proportional to 131,421.90, 197,130 and 36,649.55

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Solution

The fourth proportional to 131,421.90, 197,130 and 36,649.55 is: 54,973.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.90 : 197,130 = 36,649.55 : x
  2. Step 2: Convert to fraction form
    131,421.90/197,130 = 36,649.55/x
  3. Step 3: Cross multiply
    131,421.90x = 197,130 × 36,649.55
  4. Step 4: Simplify right side
    131,421.90x = 7,224,725,791.50
  5. Step 5: Solve for x
    x = 7,224,725,791.50/131,421.90
  6. Step 6: Final answer
    x = 54,973.53

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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.