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Finding the Fourth Proportional to 158,078.40, 236,966.40 and 79,113.12

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Solution

The fourth proportional to 158,078.40, 236,966.40 and 79,113.12 is: 118,594.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,078.40 : 236,966.40 = 79,113.12 : x
  2. Step 2: Convert to fraction form
    158,078.40/236,966.40 = 79,113.12/x
  3. Step 3: Cross multiply
    158,078.40x = 236,966.40 × 79,113.12
  4. Step 4: Simplify right side
    158,078.40x = 18,747,151,239.17
  5. Step 5: Solve for x
    x = 18,747,151,239.17/158,078.40
  6. Step 6: Final answer
    x = 118,594.01

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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.