Home / 142,949,471.80-213,883,109.88-84,688,428.46

Finding the Fourth Proportional to 142,949,471.80, 213,883,109.88 and 84,688,428.46

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Solution

The fourth proportional to 142,949,471.80, 213,883,109.88 and 84,688,428.46 is: 126,712,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,949,471.80 : 213,883,109.88 = 84,688,428.46 : x
  2. Step 2: Convert to fraction form
    142,949,471.80/213,883,109.88 = 84,688,428.46/x
  3. Step 3: Cross multiply
    142,949,471.80x = 213,883,109.88 × 84,688,428.46
  4. Step 4: Simplify right side
    142,949,471.80x = 18,113,424,449,874,696
  5. Step 5: Solve for x
    x = 18,113,424,449,874,696/142,949,471.80
  6. Step 6: Final answer
    x = 126,712,076.80

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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.