Home / 128,943,004.68-177,939,676.26-70,204,997.16

Finding the Fourth Proportional to 128,943,004.68, 177,939,676.26 and 70,204,997.16

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Solution

The fourth proportional to 128,943,004.68, 177,939,676.26 and 70,204,997.16 is: 96,881,986.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,943,004.68 : 177,939,676.26 = 70,204,997.16 : x
  2. Step 2: Convert to fraction form
    128,943,004.68/177,939,676.26 = 70,204,997.16/x
  3. Step 3: Cross multiply
    128,943,004.68x = 177,939,676.26 × 70,204,997.16
  4. Step 4: Simplify right side
    128,943,004.68x = 12,492,254,466,484,618
  5. Step 5: Solve for x
    x = 12,492,254,466,484,618/128,943,004.68
  6. Step 6: Final answer
    x = 96,881,986.72

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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.