Home / 142,117,600.80-213,176,401.20-81,651,424.80

Finding the Fourth Proportional to 142,117,600.80, 213,176,401.20 and 81,651,424.80

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Solution

The fourth proportional to 142,117,600.80, 213,176,401.20 and 81,651,424.80 is: 122,477,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,117,600.80 : 213,176,401.20 = 81,651,424.80 : x
  2. Step 2: Convert to fraction form
    142,117,600.80/213,176,401.20 = 81,651,424.80/x
  3. Step 3: Cross multiply
    142,117,600.80x = 213,176,401.20 × 81,651,424.80
  4. Step 4: Simplify right side
    142,117,600.80x = 17,406,156,891,716,428
  5. Step 5: Solve for x
    x = 17,406,156,891,716,428/142,117,600.80
  6. Step 6: Final answer
    x = 122,477,137.20

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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.