Home / 151,355.98-208,871.31-87,730.66

Finding the Fourth Proportional to 151,355.98, 208,871.31 and 87,730.66

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Solution

The fourth proportional to 151,355.98, 208,871.31 and 87,730.66 is: 121,068.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,355.98 : 208,871.31 = 87,730.66 : x
  2. Step 2: Convert to fraction form
    151,355.98/208,871.31 = 87,730.66/x
  3. Step 3: Cross multiply
    151,355.98x = 208,871.31 × 87,730.66
  4. Step 4: Simplify right side
    151,355.98x = 18,324,417,881.36
  5. Step 5: Solve for x
    x = 18,324,417,881.36/151,355.98
  6. Step 6: Final answer
    x = 121,068.34

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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.