Home / 111,890.57-154,427.72-71,602.38

Finding the Fourth Proportional to 111,890.57, 154,427.72 and 71,602.38

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Solution

The fourth proportional to 111,890.57, 154,427.72 and 71,602.38 is: 98,823.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,890.57 : 154,427.72 = 71,602.38 : x
  2. Step 2: Convert to fraction form
    111,890.57/154,427.72 = 71,602.38/x
  3. Step 3: Cross multiply
    111,890.57x = 154,427.72 × 71,602.38
  4. Step 4: Simplify right side
    111,890.57x = 11,057,391,931.96
  5. Step 5: Solve for x
    x = 11,057,391,931.96/111,890.57
  6. Step 6: Final answer
    x = 98,823.27

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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.