Home / 112,307,812.80-168,461,719.20-66,958,180.80

Finding the Fourth Proportional to 112,307,812.80, 168,461,719.20 and 66,958,180.80

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Solution

The fourth proportional to 112,307,812.80, 168,461,719.20 and 66,958,180.80 is: 100,437,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,307,812.80 : 168,461,719.20 = 66,958,180.80 : x
  2. Step 2: Convert to fraction form
    112,307,812.80/168,461,719.20 = 66,958,180.80/x
  3. Step 3: Cross multiply
    112,307,812.80x = 168,461,719.20 × 66,958,180.80
  4. Step 4: Simplify right side
    112,307,812.80x = 11,279,890,252,072,430
  5. Step 5: Solve for x
    x = 11,279,890,252,072,430/112,307,812.80
  6. Step 6: Final answer
    x = 100,437,271.20

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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.