Home / 129,204.16-178,303.84-71,063.28

Finding the Fourth Proportional to 129,204.16, 178,303.84 and 71,063.28

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Solution

The fourth proportional to 129,204.16, 178,303.84 and 71,063.28 is: 98,068.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,204.16 : 178,303.84 = 71,063.28 : x
  2. Step 2: Convert to fraction form
    129,204.16/178,303.84 = 71,063.28/x
  3. Step 3: Cross multiply
    129,204.16x = 178,303.84 × 71,063.28
  4. Step 4: Simplify right side
    129,204.16x = 12,670,855,707.00
  5. Step 5: Solve for x
    x = 12,670,855,707.00/129,204.16
  6. Step 6: Final answer
    x = 98,068.48

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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.