Home / 131,123.20-196,684.80-37,638.40

Finding the Fourth Proportional to 131,123.20, 196,684.80 and 37,638.40

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Solution

The fourth proportional to 131,123.20, 196,684.80 and 37,638.40 is: 56,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,123.20 : 196,684.80 = 37,638.40 : x
  2. Step 2: Convert to fraction form
    131,123.20/196,684.80 = 37,638.40/x
  3. Step 3: Cross multiply
    131,123.20x = 196,684.80 × 37,638.40
  4. Step 4: Simplify right side
    131,123.20x = 7,402,901,176.32
  5. Step 5: Solve for x
    x = 7,402,901,176.32/131,123.20
  6. Step 6: Final answer
    x = 56,457.60

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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.