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Finding the Fourth Proportional to 212,073.63, 292,662.21 and 121,430.98

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Solution

The fourth proportional to 212,073.63, 292,662.21 and 121,430.98 is: 167,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,073.63 : 292,662.21 = 121,430.98 : x
  2. Step 2: Convert to fraction form
    212,073.63/292,662.21 = 121,430.98/x
  3. Step 3: Cross multiply
    212,073.63x = 292,662.21 × 121,430.98
  4. Step 4: Simplify right side
    212,073.63x = 35,538,258,969.27
  5. Step 5: Solve for x
    x = 35,538,258,969.27/212,073.63
  6. Step 6: Final answer
    x = 167,575.10

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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.