Home / 128,046,484.61-176,630,391.92-77,089,851.27

Finding the Fourth Proportional to 128,046,484.61, 176,630,391.92 and 77,089,851.27

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Solution

The fourth proportional to 128,046,484.61, 176,630,391.92 and 77,089,851.27 is: 106,339,589.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,046,484.61 : 176,630,391.92 = 77,089,851.27 : x
  2. Step 2: Convert to fraction form
    128,046,484.61/176,630,391.92 = 77,089,851.27/x
  3. Step 3: Cross multiply
    128,046,484.61x = 176,630,391.92 × 77,089,851.27
  4. Step 4: Simplify right side
    128,046,484.61x = 13,616,410,643,315,500
  5. Step 5: Solve for x
    x = 13,616,410,643,315,500/128,046,484.61
  6. Step 6: Final answer
    x = 106,339,589.76

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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.