Home / 139,403,812.40-209,105,718.60-71,223,844.40

Finding the Fourth Proportional to 139,403,812.40, 209,105,718.60 and 71,223,844.40

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Solution

The fourth proportional to 139,403,812.40, 209,105,718.60 and 71,223,844.40 is: 106,835,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,403,812.40 : 209,105,718.60 = 71,223,844.40 : x
  2. Step 2: Convert to fraction form
    139,403,812.40/209,105,718.60 = 71,223,844.40/x
  3. Step 3: Cross multiply
    139,403,812.40x = 209,105,718.60 × 71,223,844.40
  4. Step 4: Simplify right side
    139,403,812.40x = 14,893,313,164,716,586
  5. Step 5: Solve for x
    x = 14,893,313,164,716,586/139,403,812.40
  6. Step 6: Final answer
    x = 106,835,766.60

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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.