Home / 156,986.71-216,647.36-89,931.67

Finding the Fourth Proportional to 156,986.71, 216,647.36 and 89,931.67

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Solution

The fourth proportional to 156,986.71, 216,647.36 and 89,931.67 is: 124,108.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.71 : 216,647.36 = 89,931.67 : x
  2. Step 2: Convert to fraction form
    156,986.71/216,647.36 = 89,931.67/x
  3. Step 3: Cross multiply
    156,986.71x = 216,647.36 × 89,931.67
  4. Step 4: Simplify right side
    156,986.71x = 19,483,458,231.86
  5. Step 5: Solve for x
    x = 19,483,458,231.86/156,986.71
  6. Step 6: Final answer
    x = 124,108.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.