Home / 129,184.02-178,265.07-72,603.90

Finding the Fourth Proportional to 129,184.02, 178,265.07 and 72,603.90

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Solution

The fourth proportional to 129,184.02, 178,265.07 and 72,603.90 is: 100,188.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,184.02 : 178,265.07 = 72,603.90 : x
  2. Step 2: Convert to fraction form
    129,184.02/178,265.07 = 72,603.90/x
  3. Step 3: Cross multiply
    129,184.02x = 178,265.07 × 72,603.90
  4. Step 4: Simplify right side
    129,184.02x = 12,942,739,315.77
  5. Step 5: Solve for x
    x = 12,942,739,315.77/129,184.02
  6. Step 6: Final answer
    x = 100,188.39

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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.