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Finding the Fourth Proportional to 115,607, 173,445.46 and 81,938.14

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Solution

The fourth proportional to 115,607, 173,445.46 and 81,938.14 is: 122,931.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,607 : 173,445.46 = 81,938.14 : x
  2. Step 2: Convert to fraction form
    115,607/173,445.46 = 81,938.14/x
  3. Step 3: Cross multiply
    115,607x = 173,445.46 × 81,938.14
  4. Step 4: Simplify right side
    115,607x = 14,211,798,383.84
  5. Step 5: Solve for x
    x = 14,211,798,383.84/115,607
  6. Step 6: Final answer
    x = 122,931.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.