Home / 121,437.53-167,575.88-66,986.42

Finding the Fourth Proportional to 121,437.53, 167,575.88 and 66,986.42

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Solution

The fourth proportional to 121,437.53, 167,575.88 and 66,986.42 is: 92,436.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,437.53 : 167,575.88 = 66,986.42 : x
  2. Step 2: Convert to fraction form
    121,437.53/167,575.88 = 66,986.42/x
  3. Step 3: Cross multiply
    121,437.53x = 167,575.88 × 66,986.42
  4. Step 4: Simplify right side
    121,437.53x = 11,225,307,106.74
  5. Step 5: Solve for x
    x = 11,225,307,106.74/121,437.53
  6. Step 6: Final answer
    x = 92,436.89

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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.