Home / 84,170,829.60-126,256,244.40-81,651,405.60

Finding the Fourth Proportional to 84,170,829.60, 126,256,244.40 and 81,651,405.60

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Solution

The fourth proportional to 84,170,829.60, 126,256,244.40 and 81,651,405.60 is: 122,477,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,170,829.60 : 126,256,244.40 = 81,651,405.60 : x
  2. Step 2: Convert to fraction form
    84,170,829.60/126,256,244.40 = 81,651,405.60/x
  3. Step 3: Cross multiply
    84,170,829.60x = 126,256,244.40 × 81,651,405.60
  4. Step 4: Simplify right side
    84,170,829.60x = 10,308,999,821,037,128
  5. Step 5: Solve for x
    x = 10,308,999,821,037,128/84,170,829.60
  6. Step 6: Final answer
    x = 122,477,108.40

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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.