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Finding the Fourth Proportional to 157,900.20, 217,878.30 and 89,892.60

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Solution

The fourth proportional to 157,900.20, 217,878.30 and 89,892.60 is: 124,038.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,900.20 : 217,878.30 = 89,892.60 : x
  2. Step 2: Convert to fraction form
    157,900.20/217,878.30 = 89,892.60/x
  3. Step 3: Cross multiply
    157,900.20x = 217,878.30 × 89,892.60
  4. Step 4: Simplify right side
    157,900.20x = 19,585,646,870.58
  5. Step 5: Solve for x
    x = 19,585,646,870.58/157,900.20
  6. Step 6: Final answer
    x = 124,038.14

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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.