Home / 128,866,720.64-177,841,930.48-75,945,661.77

Finding the Fourth Proportional to 128,866,720.64, 177,841,930.48 and 75,945,661.77

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Solution

The fourth proportional to 128,866,720.64, 177,841,930.48 and 75,945,661.77 is: 104,808,464.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,866,720.64 : 177,841,930.48 = 75,945,661.77 : x
  2. Step 2: Convert to fraction form
    128,866,720.64/177,841,930.48 = 75,945,661.77/x
  3. Step 3: Cross multiply
    128,866,720.64x = 177,841,930.48 × 75,945,661.77
  4. Step 4: Simplify right side
    128,866,720.64x = 13,506,323,100,568,068
  5. Step 5: Solve for x
    x = 13,506,323,100,568,068/128,866,720.64
  6. Step 6: Final answer
    x = 104,808,464.39

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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.