Home / 143,596,918.16-198,162,963.24-78,406,355.60

Finding the Fourth Proportional to 143,596,918.16, 198,162,963.24 and 78,406,355.60

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Solution

The fourth proportional to 143,596,918.16, 198,162,963.24 and 78,406,355.60 is: 108,200,342.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,596,918.16 : 198,162,963.24 = 78,406,355.60 : x
  2. Step 2: Convert to fraction form
    143,596,918.16/198,162,963.24 = 78,406,355.60/x
  3. Step 3: Cross multiply
    143,596,918.16x = 198,162,963.24 × 78,406,355.60
  4. Step 4: Simplify right side
    143,596,918.16x = 15,537,235,762,545,168
  5. Step 5: Solve for x
    x = 15,537,235,762,545,168/143,596,918.16
  6. Step 6: Final answer
    x = 108,200,342.75

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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.