Home / 129,653.18-178,931.91-73,068.38

Finding the Fourth Proportional to 129,653.18, 178,931.91 and 73,068.38

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Solution

The fourth proportional to 129,653.18, 178,931.91 and 73,068.38 is: 100,840.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,653.18 : 178,931.91 = 73,068.38 : x
  2. Step 2: Convert to fraction form
    129,653.18/178,931.91 = 73,068.38/x
  3. Step 3: Cross multiply
    129,653.18x = 178,931.91 × 73,068.38
  4. Step 4: Simplify right side
    129,653.18x = 13,074,264,794.01
  5. Step 5: Solve for x
    x = 13,074,264,794.01/129,653.18
  6. Step 6: Final answer
    x = 100,840.29

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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.