Home / 103,551,199.56-142,899,756-56,509,203.78

Finding the Fourth Proportional to 103,551,199.56, 142,899,756 and 56,509,203.78

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Solution

The fourth proportional to 103,551,199.56, 142,899,756 and 56,509,203.78 is: 77,982,210.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,551,199.56 : 142,899,756 = 56,509,203.78 : x
  2. Step 2: Convert to fraction form
    103,551,199.56/142,899,756 = 56,509,203.78/x
  3. Step 3: Cross multiply
    103,551,199.56x = 142,899,756 × 56,509,203.78
  4. Step 4: Simplify right side
    103,551,199.56x = 8,075,151,431,916,278
  5. Step 5: Solve for x
    x = 8,075,151,431,916,278/103,551,199.56
  6. Step 6: Final answer
    x = 77,982,210.41

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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.