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Finding the Fourth Proportional to 118,308, 163,051.20 and 98,058.24

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Solution

The fourth proportional to 118,308, 163,051.20 and 98,058.24 is: 135,143.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,308 : 163,051.20 = 98,058.24 : x
  2. Step 2: Convert to fraction form
    118,308/163,051.20 = 98,058.24/x
  3. Step 3: Cross multiply
    118,308x = 163,051.20 × 98,058.24
  4. Step 4: Simplify right side
    118,308x = 15,988,513,701.89
  5. Step 5: Solve for x
    x = 15,988,513,701.89/118,308
  6. Step 6: Final answer
    x = 135,143.13

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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.