Home / 127,821,430.80-191,620,171.80-76,723,779.60

Finding the Fourth Proportional to 127,821,430.80, 191,620,171.80 and 76,723,779.60

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Solution

The fourth proportional to 127,821,430.80, 191,620,171.80 and 76,723,779.60 is: 115,018,457.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,821,430.80 : 191,620,171.80 = 76,723,779.60 : x
  2. Step 2: Convert to fraction form
    127,821,430.80/191,620,171.80 = 76,723,779.60/x
  3. Step 3: Cross multiply
    127,821,430.80x = 191,620,171.80 × 76,723,779.60
  4. Step 4: Simplify right side
    127,821,430.80x = 14,701,823,828,097,336
  5. Step 5: Solve for x
    x = 14,701,823,828,097,336/127,821,430.80
  6. Step 6: Final answer
    x = 115,018,457.67

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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.