Home / 121,319.63-167,421.75-70,362.56

Finding the Fourth Proportional to 121,319.63, 167,421.75 and 70,362.56

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Solution

The fourth proportional to 121,319.63, 167,421.75 and 70,362.56 is: 97,100.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,319.63 : 167,421.75 = 70,362.56 : x
  2. Step 2: Convert to fraction form
    121,319.63/167,421.75 = 70,362.56/x
  3. Step 3: Cross multiply
    121,319.63x = 167,421.75 × 70,362.56
  4. Step 4: Simplify right side
    121,319.63x = 11,780,223,348.23
  5. Step 5: Solve for x
    x = 11,780,223,348.23/121,319.63
  6. Step 6: Final answer
    x = 97,100.72

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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.