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Finding the Fourth Proportional to 160,459.40, 221,437.35 and 87,865.35

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Solution

The fourth proportional to 160,459.40, 221,437.35 and 87,865.35 is: 121,256.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,459.40 : 221,437.35 = 87,865.35 : x
  2. Step 2: Convert to fraction form
    160,459.40/221,437.35 = 87,865.35/x
  3. Step 3: Cross multiply
    160,459.40x = 221,437.35 × 87,865.35
  4. Step 4: Simplify right side
    160,459.40x = 19,456,670,260.82
  5. Step 5: Solve for x
    x = 19,456,670,260.82/160,459.40
  6. Step 6: Final answer
    x = 121,256.03

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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.