Home / 111,549.38-153,881.07-71,220.74

Finding the Fourth Proportional to 111,549.38, 153,881.07 and 71,220.74

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Solution

The fourth proportional to 111,549.38, 153,881.07 and 71,220.74 is: 98,248.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,549.38 : 153,881.07 = 71,220.74 : x
  2. Step 2: Convert to fraction form
    111,549.38/153,881.07 = 71,220.74/x
  3. Step 3: Cross multiply
    111,549.38x = 153,881.07 × 71,220.74
  4. Step 4: Simplify right side
    111,549.38x = 10,959,522,907.99
  5. Step 5: Solve for x
    x = 10,959,522,907.99/111,549.38
  6. Step 6: Final answer
    x = 98,248.18

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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.