Home / 128,888.04-193,365.54-40,143

Finding the Fourth Proportional to 128,888.04, 193,365.54 and 40,143

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Solution

The fourth proportional to 128,888.04, 193,365.54 and 40,143 is: 60,224.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,888.04 : 193,365.54 = 40,143 : x
  2. Step 2: Convert to fraction form
    128,888.04/193,365.54 = 40,143/x
  3. Step 3: Cross multiply
    128,888.04x = 193,365.54 × 40,143
  4. Step 4: Simplify right side
    128,888.04x = 7,762,272,872.22
  5. Step 5: Solve for x
    x = 7,762,272,872.22/128,888.04
  6. Step 6: Final answer
    x = 60,224.93

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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.