Home / 129,437.99-178,603.65-72,076.62

Finding the Fourth Proportional to 129,437.99, 178,603.65 and 72,076.62

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Solution

The fourth proportional to 129,437.99, 178,603.65 and 72,076.62 is: 99,454.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,437.99 : 178,603.65 = 72,076.62 : x
  2. Step 2: Convert to fraction form
    129,437.99/178,603.65 = 72,076.62/x
  3. Step 3: Cross multiply
    129,437.99x = 178,603.65 × 72,076.62
  4. Step 4: Simplify right side
    129,437.99x = 12,873,147,411.66
  5. Step 5: Solve for x
    x = 12,873,147,411.66/129,437.99
  6. Step 6: Final answer
    x = 99,454.17

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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.