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Finding the Fourth Proportional to 162,703.68, 243,962.08 and 86,708.66

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Solution

The fourth proportional to 162,703.68, 243,962.08 and 86,708.66 is: 130,013.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,703.68 : 243,962.08 = 86,708.66 : x
  2. Step 2: Convert to fraction form
    162,703.68/243,962.08 = 86,708.66/x
  3. Step 3: Cross multiply
    162,703.68x = 243,962.08 × 86,708.66
  4. Step 4: Simplify right side
    162,703.68x = 21,153,623,394.26
  5. Step 5: Solve for x
    x = 21,153,623,394.26/162,703.68
  6. Step 6: Final answer
    x = 130,013.18

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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.