Home / 121,531.47-167,686.65-70,514.64

Finding the Fourth Proportional to 121,531.47, 167,686.65 and 70,514.64

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Solution

The fourth proportional to 121,531.47, 167,686.65 and 70,514.64 is: 97,294.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,531.47 : 167,686.65 = 70,514.64 : x
  2. Step 2: Convert to fraction form
    121,531.47/167,686.65 = 70,514.64/x
  3. Step 3: Cross multiply
    121,531.47x = 167,686.65 × 70,514.64
  4. Step 4: Simplify right side
    121,531.47x = 11,824,363,757.56
  5. Step 5: Solve for x
    x = 11,824,363,757.56/121,531.47
  6. Step 6: Final answer
    x = 97,294.67

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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.