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Finding the Fourth Proportional to 131,698.55, 197,500.43 and 56,786.51

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Solution

The fourth proportional to 131,698.55, 197,500.43 and 56,786.51 is: 85,159.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,698.55 : 197,500.43 = 56,786.51 : x
  2. Step 2: Convert to fraction form
    131,698.55/197,500.43 = 56,786.51/x
  3. Step 3: Cross multiply
    131,698.55x = 197,500.43 × 56,786.51
  4. Step 4: Simplify right side
    131,698.55x = 11,215,358,871.76
  5. Step 5: Solve for x
    x = 11,215,358,871.76/131,698.55
  6. Step 6: Final answer
    x = 85,159.32

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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.