Home / 139,406,995.20-209,110,492.80-133,136,428.80

Finding the Fourth Proportional to 139,406,995.20, 209,110,492.80 and 133,136,428.80

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Solution

The fourth proportional to 139,406,995.20, 209,110,492.80 and 133,136,428.80 is: 199,704,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,406,995.20 : 209,110,492.80 = 133,136,428.80 : x
  2. Step 2: Convert to fraction form
    139,406,995.20/209,110,492.80 = 133,136,428.80/x
  3. Step 3: Cross multiply
    139,406,995.20x = 209,110,492.80 × 133,136,428.80
  4. Step 4: Simplify right side
    139,406,995.20x = 27,840,224,236,000,112
  5. Step 5: Solve for x
    x = 27,840,224,236,000,112/139,406,995.20
  6. Step 6: Final answer
    x = 199,704,643.20

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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.