Home / 121,403.27-167,492.59-70,387.91

Finding the Fourth Proportional to 121,403.27, 167,492.59 and 70,387.91

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Solution

The fourth proportional to 121,403.27, 167,492.59 and 70,387.91 is: 97,109.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,403.27 : 167,492.59 = 70,387.91 : x
  2. Step 2: Convert to fraction form
    121,403.27/167,492.59 = 70,387.91/x
  3. Step 3: Cross multiply
    121,403.27x = 167,492.59 × 70,387.91
  4. Step 4: Simplify right side
    121,403.27x = 11,789,453,683.78
  5. Step 5: Solve for x
    x = 11,789,453,683.78/121,403.27
  6. Step 6: Final answer
    x = 97,109.85

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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.