Home / 131,126.40-196,689.60-61,142.40

Finding the Fourth Proportional to 131,126.40, 196,689.60 and 61,142.40

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Solution

The fourth proportional to 131,126.40, 196,689.60 and 61,142.40 is: 91,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,126.40 : 196,689.60 = 61,142.40 : x
  2. Step 2: Convert to fraction form
    131,126.40/196,689.60 = 61,142.40/x
  3. Step 3: Cross multiply
    131,126.40x = 196,689.60 × 61,142.40
  4. Step 4: Simplify right side
    131,126.40x = 12,026,074,199.04
  5. Step 5: Solve for x
    x = 12,026,074,199.04/131,126.40
  6. Step 6: Final answer
    x = 91,713.60

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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.