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Finding the Fourth Proportional to 153,700.20, 212,074.20 and 93,302.64

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Solution

The fourth proportional to 153,700.20, 212,074.20 and 93,302.64 is: 128,738.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,700.20 : 212,074.20 = 93,302.64 : x
  2. Step 2: Convert to fraction form
    153,700.20/212,074.20 = 93,302.64/x
  3. Step 3: Cross multiply
    153,700.20x = 212,074.20 × 93,302.64
  4. Step 4: Simplify right side
    153,700.20x = 19,787,082,735.89
  5. Step 5: Solve for x
    x = 19,787,082,735.89/153,700.20
  6. Step 6: Final answer
    x = 128,738.17

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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.