Home / 122,028.67-168,312.76-111,989.53

Finding the Fourth Proportional to 122,028.67, 168,312.76 and 111,989.53

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Solution

The fourth proportional to 122,028.67, 168,312.76 and 111,989.53 is: 154,465.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,028.67 : 168,312.76 = 111,989.53 : x
  2. Step 2: Convert to fraction form
    122,028.67/168,312.76 = 111,989.53/x
  3. Step 3: Cross multiply
    122,028.67x = 168,312.76 × 111,989.53
  4. Step 4: Simplify right side
    122,028.67x = 18,849,266,885.40
  5. Step 5: Solve for x
    x = 18,849,266,885.40/122,028.67
  6. Step 6: Final answer
    x = 154,465.89

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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.