Home / 147,743,999.40-221,615,999.10-139,807,813.80

Finding the Fourth Proportional to 147,743,999.40, 221,615,999.10 and 139,807,813.80

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Solution

The fourth proportional to 147,743,999.40, 221,615,999.10 and 139,807,813.80 is: 209,711,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,743,999.40 : 221,615,999.10 = 139,807,813.80 : x
  2. Step 2: Convert to fraction form
    147,743,999.40/221,615,999.10 = 139,807,813.80/x
  3. Step 3: Cross multiply
    147,743,999.40x = 221,615,999.10 × 139,807,813.80
  4. Step 4: Simplify right side
    147,743,999.40x = 30,983,648,337,273,768
  5. Step 5: Solve for x
    x = 30,983,648,337,273,768/147,743,999.40
  6. Step 6: Final answer
    x = 209,711,720.70

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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.