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Finding the Fourth Proportional to 158,592, 218,836.86 and 86,953.20

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Solution

The fourth proportional to 158,592, 218,836.86 and 86,953.20 is: 119,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,592 : 218,836.86 = 86,953.20 : x
  2. Step 2: Convert to fraction form
    158,592/218,836.86 = 86,953.20/x
  3. Step 3: Cross multiply
    158,592x = 218,836.86 × 86,953.20
  4. Step 4: Simplify right side
    158,592x = 19,028,565,254.95
  5. Step 5: Solve for x
    x = 19,028,565,254.95/158,592
  6. Step 6: Final answer
    x = 119,984.40

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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.