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Finding the Fourth Proportional to 177,391.51, 265,708.95 and 143,512.15

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Solution

The fourth proportional to 177,391.51, 265,708.95 and 143,512.15 is: 214,962.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,391.51 : 265,708.95 = 143,512.15 : x
  2. Step 2: Convert to fraction form
    177,391.51/265,708.95 = 143,512.15/x
  3. Step 3: Cross multiply
    177,391.51x = 265,708.95 × 143,512.15
  4. Step 4: Simplify right side
    177,391.51x = 38,132,462,688.74
  5. Step 5: Solve for x
    x = 38,132,462,688.74/177,391.51
  6. Step 6: Final answer
    x = 214,962.16

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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.