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Finding the Fourth Proportional to 118,170.16, 163,070.76 and 70,398.72

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Solution

The fourth proportional to 118,170.16, 163,070.76 and 70,398.72 is: 97,147.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,170.16 : 163,070.76 = 70,398.72 : x
  2. Step 2: Convert to fraction form
    118,170.16/163,070.76 = 70,398.72/x
  3. Step 3: Cross multiply
    118,170.16x = 163,070.76 × 70,398.72
  4. Step 4: Simplify right side
    118,170.16x = 11,479,972,773.43
  5. Step 5: Solve for x
    x = 11,479,972,773.43/118,170.16
  6. Step 6: Final answer
    x = 97,147.81

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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.