Home / 142,739,316.16-196,936,860-80,849,821.12

Finding the Fourth Proportional to 142,739,316.16, 196,936,860 and 80,849,821.12

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Solution

The fourth proportional to 142,739,316.16, 196,936,860 and 80,849,821.12 is: 111,548,172.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,739,316.16 : 196,936,860 = 80,849,821.12 : x
  2. Step 2: Convert to fraction form
    142,739,316.16/196,936,860 = 80,849,821.12/x
  3. Step 3: Cross multiply
    142,739,316.16x = 196,936,860 × 80,849,821.12
  4. Step 4: Simplify right side
    142,739,316.16x = 15,922,309,902,934,484
  5. Step 5: Solve for x
    x = 15,922,309,902,934,484/142,739,316.16
  6. Step 6: Final answer
    x = 111,548,172.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.