Home / 80,959,201.60-121,438,802.40-77,376,020.80

Finding the Fourth Proportional to 80,959,201.60, 121,438,802.40 and 77,376,020.80

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Solution

The fourth proportional to 80,959,201.60, 121,438,802.40 and 77,376,020.80 is: 116,064,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,959,201.60 : 121,438,802.40 = 77,376,020.80 : x
  2. Step 2: Convert to fraction form
    80,959,201.60/121,438,802.40 = 77,376,020.80/x
  3. Step 3: Cross multiply
    80,959,201.60x = 121,438,802.40 × 77,376,020.80
  4. Step 4: Simplify right side
    80,959,201.60x = 9,396,451,300,429,490
  5. Step 5: Solve for x
    x = 9,396,451,300,429,490/80,959,201.60
  6. Step 6: Final answer
    x = 116,064,031.20

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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.