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Finding the Fourth Proportional to 86,848.80, 130,078.80 and 84,904.80

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Solution

The fourth proportional to 86,848.80, 130,078.80 and 84,904.80 is: 127,167.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,848.80 : 130,078.80 = 84,904.80 : x
  2. Step 2: Convert to fraction form
    86,848.80/130,078.80 = 84,904.80/x
  3. Step 3: Cross multiply
    86,848.80x = 130,078.80 × 84,904.80
  4. Step 4: Simplify right side
    86,848.80x = 11,044,314,498.24
  5. Step 5: Solve for x
    x = 11,044,314,498.24/86,848.80
  6. Step 6: Final answer
    x = 127,167.15

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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.