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Finding the Fourth Proportional to 115,157.40, 172,750.67 and 45,027.60

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Solution

The fourth proportional to 115,157.40, 172,750.67 and 45,027.60 is: 67,547.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,157.40 : 172,750.67 = 45,027.60 : x
  2. Step 2: Convert to fraction form
    115,157.40/172,750.67 = 45,027.60/x
  3. Step 3: Cross multiply
    115,157.40x = 172,750.67 × 45,027.60
  4. Step 4: Simplify right side
    115,157.40x = 7,778,547,617.67
  5. Step 5: Solve for x
    x = 7,778,547,617.67/115,157.40
  6. Step 6: Final answer
    x = 67,547.10

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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.