Home / 209,130,622.80-313,695,934.20-72,816,006.30

Finding the Fourth Proportional to 209,130,622.80, 313,695,934.20 and 72,816,006.30

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Solution

The fourth proportional to 209,130,622.80, 313,695,934.20 and 72,816,006.30 is: 109,224,009.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,130,622.80 : 313,695,934.20 = 72,816,006.30 : x
  2. Step 2: Convert to fraction form
    209,130,622.80/313,695,934.20 = 72,816,006.30/x
  3. Step 3: Cross multiply
    209,130,622.80x = 313,695,934.20 × 72,816,006.30
  4. Step 4: Simplify right side
    209,130,622.80x = 22,842,085,120,991,584
  5. Step 5: Solve for x
    x = 22,842,085,120,991,584/209,130,622.80
  6. Step 6: Final answer
    x = 109,224,009.45

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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.