Home / 128,973.39-193,566.69-65,840.16

Finding the Fourth Proportional to 128,973.39, 193,566.69 and 65,840.16

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Solution

The fourth proportional to 128,973.39, 193,566.69 and 65,840.16 is: 98,814.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,973.39 : 193,566.69 = 65,840.16 : x
  2. Step 2: Convert to fraction form
    128,973.39/193,566.69 = 65,840.16/x
  3. Step 3: Cross multiply
    128,973.39x = 193,566.69 × 65,840.16
  4. Step 4: Simplify right side
    128,973.39x = 12,744,461,840.27
  5. Step 5: Solve for x
    x = 12,744,461,840.27/128,973.39
  6. Step 6: Final answer
    x = 98,814.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.