Home / 128,021,448.96-191,838,196.26-84,735,579.51

Finding the Fourth Proportional to 128,021,448.96, 191,838,196.26 and 84,735,579.51

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Solution

The fourth proportional to 128,021,448.96, 191,838,196.26 and 84,735,579.51 is: 126,974,978.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,021,448.96 : 191,838,196.26 = 84,735,579.51 : x
  2. Step 2: Convert to fraction form
    128,021,448.96/191,838,196.26 = 84,735,579.51/x
  3. Step 3: Cross multiply
    128,021,448.96x = 191,838,196.26 × 84,735,579.51
  4. Step 4: Simplify right side
    128,021,448.96x = 16,255,520,732,244,214
  5. Step 5: Solve for x
    x = 16,255,520,732,244,214/128,021,448.96
  6. Step 6: Final answer
    x = 126,974,978.52

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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.