Home / 131,421.10-197,131.65-130,038.70

Finding the Fourth Proportional to 131,421.10, 197,131.65 and 130,038.70

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Solution

The fourth proportional to 131,421.10, 197,131.65 and 130,038.70 is: 195,058.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.10 : 197,131.65 = 130,038.70 : x
  2. Step 2: Convert to fraction form
    131,421.10/197,131.65 = 130,038.70/x
  3. Step 3: Cross multiply
    131,421.10x = 197,131.65 × 130,038.70
  4. Step 4: Simplify right side
    131,421.10x = 25,634,743,494.86
  5. Step 5: Solve for x
    x = 25,634,743,494.86/131,421.10
  6. Step 6: Final answer
    x = 195,058.05

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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.