Home / 139,968,020.30-209,952,030.45-105,479,905.10

Finding the Fourth Proportional to 139,968,020.30, 209,952,030.45 and 105,479,905.10

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Solution

The fourth proportional to 139,968,020.30, 209,952,030.45 and 105,479,905.10 is: 158,219,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,020.30 : 209,952,030.45 = 105,479,905.10 : x
  2. Step 2: Convert to fraction form
    139,968,020.30/209,952,030.45 = 105,479,905.10/x
  3. Step 3: Cross multiply
    139,968,020.30x = 209,952,030.45 × 105,479,905.10
  4. Step 4: Simplify right side
    139,968,020.30x = 22,145,720,247,418,308
  5. Step 5: Solve for x
    x = 22,145,720,247,418,308/139,968,020.30
  6. Step 6: Final answer
    x = 158,219,857.65

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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.