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Finding the Fourth Proportional to 154,047.60, 212,578.08 and 86,051.08

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Solution

The fourth proportional to 154,047.60, 212,578.08 and 86,051.08 is: 118,746.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,047.60 : 212,578.08 = 86,051.08 : x
  2. Step 2: Convert to fraction form
    154,047.60/212,578.08 = 86,051.08/x
  3. Step 3: Cross multiply
    154,047.60x = 212,578.08 × 86,051.08
  4. Step 4: Simplify right side
    154,047.60x = 18,292,573,368.33
  5. Step 5: Solve for x
    x = 18,292,573,368.33/154,047.60
  6. Step 6: Final answer
    x = 118,746.24

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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.