Home / 129,075.17-178,028.91-75,356.98

Finding the Fourth Proportional to 129,075.17, 178,028.91 and 75,356.98

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Solution

The fourth proportional to 129,075.17, 178,028.91 and 75,356.98 is: 103,937.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,075.17 : 178,028.91 = 75,356.98 : x
  2. Step 2: Convert to fraction form
    129,075.17/178,028.91 = 75,356.98/x
  3. Step 3: Cross multiply
    129,075.17x = 178,028.91 × 75,356.98
  4. Step 4: Simplify right side
    129,075.17x = 13,415,720,565.22
  5. Step 5: Solve for x
    x = 13,415,720,565.22/129,075.17
  6. Step 6: Final answer
    x = 103,937.27

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1.5x scale

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.