Home / 139,968,128.20-209,952,192.30-42,938,811.40

Finding the Fourth Proportional to 139,968,128.20, 209,952,192.30 and 42,938,811.40

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Solution

The fourth proportional to 139,968,128.20, 209,952,192.30 and 42,938,811.40 is: 64,408,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,128.20 : 209,952,192.30 = 42,938,811.40 : x
  2. Step 2: Convert to fraction form
    139,968,128.20/209,952,192.30 = 42,938,811.40/x
  3. Step 3: Cross multiply
    139,968,128.20x = 209,952,192.30 × 42,938,811.40
  4. Step 4: Simplify right side
    139,968,128.20x = 9,015,097,588,186,232
  5. Step 5: Solve for x
    x = 9,015,097,588,186,232/139,968,128.20
  6. Step 6: Final answer
    x = 64,408,217.10

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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.