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Finding the Fourth Proportional to 158,711.70, 219,014.60 and 87,090.14

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Solution

The fourth proportional to 158,711.70, 219,014.60 and 87,090.14 is: 120,180.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,711.70 : 219,014.60 = 87,090.14 : x
  2. Step 2: Convert to fraction form
    158,711.70/219,014.60 = 87,090.14/x
  3. Step 3: Cross multiply
    158,711.70x = 219,014.60 × 87,090.14
  4. Step 4: Simplify right side
    158,711.70x = 19,074,012,176.04
  5. Step 5: Solve for x
    x = 19,074,012,176.04/158,711.70
  6. Step 6: Final answer
    x = 120,180.25

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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.