Home / 126,526.32-189,789.48-51,681.78

Finding the Fourth Proportional to 126,526.32, 189,789.48 and 51,681.78

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Solution

The fourth proportional to 126,526.32, 189,789.48 and 51,681.78 is: 77,522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,526.32 : 189,789.48 = 51,681.78 : x
  2. Step 2: Convert to fraction form
    126,526.32/189,789.48 = 51,681.78/x
  3. Step 3: Cross multiply
    126,526.32x = 189,789.48 × 51,681.78
  4. Step 4: Simplify right side
    126,526.32x = 9,808,658,151.67
  5. Step 5: Solve for x
    x = 9,808,658,151.67/126,526.32
  6. Step 6: Final answer
    x = 77,522.67

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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.