Home / 121,289.81-167,380.43-70,312.46

Finding the Fourth Proportional to 121,289.81, 167,380.43 and 70,312.46

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Solution

The fourth proportional to 121,289.81, 167,380.43 and 70,312.46 is: 97,031.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,289.81 : 167,380.43 = 70,312.46 : x
  2. Step 2: Convert to fraction form
    121,289.81/167,380.43 = 70,312.46/x
  3. Step 3: Cross multiply
    121,289.81x = 167,380.43 × 70,312.46
  4. Step 4: Simplify right side
    121,289.81x = 11,768,928,600.69
  5. Step 5: Solve for x
    x = 11,768,928,600.69/121,289.81
  6. Step 6: Final answer
    x = 97,031.47

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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.