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Finding the Fourth Proportional to 157,303, 217,078.14 and 90,256.60

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Solution

The fourth proportional to 157,303, 217,078.14 and 90,256.60 is: 124,554.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,303 : 217,078.14 = 90,256.60 : x
  2. Step 2: Convert to fraction form
    157,303/217,078.14 = 90,256.60/x
  3. Step 3: Cross multiply
    157,303x = 217,078.14 × 90,256.60
  4. Step 4: Simplify right side
    157,303x = 19,592,734,850.72
  5. Step 5: Solve for x
    x = 19,592,734,850.72/157,303
  6. Step 6: Final answer
    x = 124,554.11

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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.