Home / 129,312.44-178,448.98-71,951.16

Finding the Fourth Proportional to 129,312.44, 178,448.98 and 71,951.16

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Solution

The fourth proportional to 129,312.44, 178,448.98 and 71,951.16 is: 99,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,312.44 : 178,448.98 = 71,951.16 : x
  2. Step 2: Convert to fraction form
    129,312.44/178,448.98 = 71,951.16/x
  3. Step 3: Cross multiply
    129,312.44x = 178,448.98 × 71,951.16
  4. Step 4: Simplify right side
    129,312.44x = 12,839,611,111.82
  5. Step 5: Solve for x
    x = 12,839,611,111.82/129,312.44
  6. Step 6: Final answer
    x = 99,291.38

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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.