Home / 131,678.45-197,524.05-42,931.81

Finding the Fourth Proportional to 131,678.45, 197,524.05 and 42,931.81

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Solution

The fourth proportional to 131,678.45, 197,524.05 and 42,931.81 is: 64,399.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,678.45 : 197,524.05 = 42,931.81 : x
  2. Step 2: Convert to fraction form
    131,678.45/197,524.05 = 42,931.81/x
  3. Step 3: Cross multiply
    131,678.45x = 197,524.05 × 42,931.81
  4. Step 4: Simplify right side
    131,678.45x = 8,480,064,985.03
  5. Step 5: Solve for x
    x = 8,480,064,985.03/131,678.45
  6. Step 6: Final answer
    x = 64,399.79

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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.