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Finding the Fourth Proportional to 158,801.40, 238,129.20 and 70,009.20

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Solution

The fourth proportional to 158,801.40, 238,129.20 and 70,009.20 is: 104,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,801.40 : 238,129.20 = 70,009.20 : x
  2. Step 2: Convert to fraction form
    158,801.40/238,129.20 = 70,009.20/x
  3. Step 3: Cross multiply
    158,801.40x = 238,129.20 × 70,009.20
  4. Step 4: Simplify right side
    158,801.40x = 16,671,234,788.64
  5. Step 5: Solve for x
    x = 16,671,234,788.64/158,801.40
  6. Step 6: Final answer
    x = 104,981.66

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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.