Home / 199,741,920.80-299,612,881.20-139,225,978.40

Finding the Fourth Proportional to 199,741,920.80, 299,612,881.20 and 139,225,978.40

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Solution

The fourth proportional to 199,741,920.80, 299,612,881.20 and 139,225,978.40 is: 208,838,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,741,920.80 : 299,612,881.20 = 139,225,978.40 : x
  2. Step 2: Convert to fraction form
    199,741,920.80/299,612,881.20 = 139,225,978.40/x
  3. Step 3: Cross multiply
    199,741,920.80x = 299,612,881.20 × 139,225,978.40
  4. Step 4: Simplify right side
    199,741,920.80x = 41,713,896,526,312,968
  5. Step 5: Solve for x
    x = 41,713,896,526,312,968/199,741,920.80
  6. Step 6: Final answer
    x = 208,838,967.60

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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.