Home / 128,457,369.27-177,271,335.60-69,720,027.72

Finding the Fourth Proportional to 128,457,369.27, 177,271,335.60 and 69,720,027.72

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Solution

The fourth proportional to 128,457,369.27, 177,271,335.60 and 69,720,027.72 is: 96,213,728.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,457,369.27 : 177,271,335.60 = 69,720,027.72 : x
  2. Step 2: Convert to fraction form
    128,457,369.27/177,271,335.60 = 69,720,027.72/x
  3. Step 3: Cross multiply
    128,457,369.27x = 177,271,335.60 × 69,720,027.72
  4. Step 4: Simplify right side
    128,457,369.27x = 12,359,362,431,993,422
  5. Step 5: Solve for x
    x = 12,359,362,431,993,422/128,457,369.27
  6. Step 6: Final answer
    x = 96,213,728.35

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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.