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Finding the Fourth Proportional to 118,359.56, 163,337.12 and 64,643.60

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Solution

The fourth proportional to 118,359.56, 163,337.12 and 64,643.60 is: 89,208.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,359.56 : 163,337.12 = 64,643.60 : x
  2. Step 2: Convert to fraction form
    118,359.56/163,337.12 = 64,643.60/x
  3. Step 3: Cross multiply
    118,359.56x = 163,337.12 × 64,643.60
  4. Step 4: Simplify right side
    118,359.56x = 10,558,699,450.43
  5. Step 5: Solve for x
    x = 10,558,699,450.43/118,359.56
  6. Step 6: Final answer
    x = 89,208.67

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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.