Home / 139,968,662.40-209,952,993.60-78,746,659.20

Finding the Fourth Proportional to 139,968,662.40, 209,952,993.60 and 78,746,659.20

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Solution

The fourth proportional to 139,968,662.40, 209,952,993.60 and 78,746,659.20 is: 118,119,988.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,662.40 : 209,952,993.60 = 78,746,659.20 : x
  2. Step 2: Convert to fraction form
    139,968,662.40/209,952,993.60 = 78,746,659.20/x
  3. Step 3: Cross multiply
    139,968,662.40x = 209,952,993.60 × 78,746,659.20
  4. Step 4: Simplify right side
    139,968,662.40x = 16,533,096,835,038,982
  5. Step 5: Solve for x
    x = 16,533,096,835,038,982/139,968,662.40
  6. Step 6: Final answer
    x = 118,119,988.80

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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.