Home / 121,398.15-167,541.70-70,426.47

Finding the Fourth Proportional to 121,398.15, 167,541.70 and 70,426.47

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Solution

The fourth proportional to 121,398.15, 167,541.70 and 70,426.47 is: 97,195.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,398.15 : 167,541.70 = 70,426.47 : x
  2. Step 2: Convert to fraction form
    121,398.15/167,541.70 = 70,426.47/x
  3. Step 3: Cross multiply
    121,398.15x = 167,541.70 × 70,426.47
  4. Step 4: Simplify right side
    121,398.15x = 11,799,371,093.06
  5. Step 5: Solve for x
    x = 11,799,371,093.06/121,398.15
  6. Step 6: Final answer
    x = 97,195.64

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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.