Home / 128,457,367.78-177,271,333.53-69,720,026.21

Finding the Fourth Proportional to 128,457,367.78, 177,271,333.53 and 69,720,026.21

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Solution

The fourth proportional to 128,457,367.78, 177,271,333.53 and 69,720,026.21 is: 96,213,726.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,457,367.78 : 177,271,333.53 = 69,720,026.21 : x
  2. Step 2: Convert to fraction form
    128,457,367.78/177,271,333.53 = 69,720,026.21/x
  3. Step 3: Cross multiply
    128,457,367.78x = 177,271,333.53 × 69,720,026.21
  4. Step 4: Simplify right side
    128,457,367.78x = 12,359,362,020,436,432
  5. Step 5: Solve for x
    x = 12,359,362,020,436,432/128,457,367.78
  6. Step 6: Final answer
    x = 96,213,726.27

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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.