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Finding the Fourth Proportional to 118,491.66, 163,518.12 and 64,776.72

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Solution

The fourth proportional to 118,491.66, 163,518.12 and 64,776.72 is: 89,391.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,491.66 : 163,518.12 = 64,776.72 : x
  2. Step 2: Convert to fraction form
    118,491.66/163,518.12 = 64,776.72/x
  3. Step 3: Cross multiply
    118,491.66x = 163,518.12 × 64,776.72
  4. Step 4: Simplify right side
    118,491.66x = 10,592,167,474.17
  5. Step 5: Solve for x
    x = 10,592,167,474.17/118,491.66
  6. Step 6: Final answer
    x = 89,391.67

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1.5x scale

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.