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Finding the Fourth Proportional to 121,324, 167,407.42 and 70,326.78

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Solution

The fourth proportional to 121,324, 167,407.42 and 70,326.78 is: 97,039.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,324 : 167,407.42 = 70,326.78 : x
  2. Step 2: Convert to fraction form
    121,324/167,407.42 = 70,326.78/x
  3. Step 3: Cross multiply
    121,324x = 167,407.42 × 70,326.78
  4. Step 4: Simplify right side
    121,324x = 11,773,224,796.71
  5. Step 5: Solve for x
    x = 11,773,224,796.71/121,324
  6. Step 6: Final answer
    x = 97,039.54

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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.