Home / 121,389.32-167,513.96-70,398.81

Finding the Fourth Proportional to 121,389.32, 167,513.96 and 70,398.81

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Solution

The fourth proportional to 121,389.32, 167,513.96 and 70,398.81 is: 97,148.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,389.32 : 167,513.96 = 70,398.81 : x
  2. Step 2: Convert to fraction form
    121,389.32/167,513.96 = 70,398.81/x
  3. Step 3: Cross multiply
    121,389.32x = 167,513.96 × 70,398.81
  4. Step 4: Simplify right side
    121,389.32x = 11,792,783,618.38
  5. Step 5: Solve for x
    x = 11,792,783,618.38/121,389.32
  6. Step 6: Final answer
    x = 97,148.44

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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.