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Finding the Fourth Proportional to 118,380.16, 178,369.43 and 97,781.69

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Solution

The fourth proportional to 118,380.16, 178,369.43 and 97,781.69 is: 147,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,380.16 : 178,369.43 = 97,781.69 : x
  2. Step 2: Convert to fraction form
    118,380.16/178,369.43 = 97,781.69/x
  3. Step 3: Cross multiply
    118,380.16x = 178,369.43 × 97,781.69
  4. Step 4: Simplify right side
    118,380.16x = 17,441,265,000.11
  5. Step 5: Solve for x
    x = 17,441,265,000.11/118,380.16
  6. Step 6: Final answer
    x = 147,332.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.