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Finding the Fourth Proportional to 118,641.44, 163,709 and 70,884.64

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Solution

The fourth proportional to 118,641.44, 163,709 and 70,884.64 is: 97,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,641.44 : 163,709 = 70,884.64 : x
  2. Step 2: Convert to fraction form
    118,641.44/163,709 = 70,884.64/x
  3. Step 3: Cross multiply
    118,641.44x = 163,709 × 70,884.64
  4. Step 4: Simplify right side
    118,641.44x = 11,604,453,529.76
  5. Step 5: Solve for x
    x = 11,604,453,529.76/118,641.44
  6. Step 6: Final answer
    x = 97,811.13

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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.