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Finding the Fourth Proportional to 151,985.50, 209,750.85 and 84,001.01

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Solution

The fourth proportional to 151,985.50, 209,750.85 and 84,001.01 is: 115,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,985.50 : 209,750.85 = 84,001.01 : x
  2. Step 2: Convert to fraction form
    151,985.50/209,750.85 = 84,001.01/x
  3. Step 3: Cross multiply
    151,985.50x = 209,750.85 × 84,001.01
  4. Step 4: Simplify right side
    151,985.50x = 17,619,283,248.36
  5. Step 5: Solve for x
    x = 17,619,283,248.36/151,985.50
  6. Step 6: Final answer
    x = 115,927.40

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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.