Home / 151,429.65-208,958.64-89,330.45

Finding the Fourth Proportional to 151,429.65, 208,958.64 and 89,330.45

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Solution

The fourth proportional to 151,429.65, 208,958.64 and 89,330.45 is: 123,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,429.65 : 208,958.64 = 89,330.45 : x
  2. Step 2: Convert to fraction form
    151,429.65/208,958.64 = 89,330.45/x
  3. Step 3: Cross multiply
    151,429.65x = 208,958.64 × 89,330.45
  4. Step 4: Simplify right side
    151,429.65x = 18,666,369,342.59
  5. Step 5: Solve for x
    x = 18,666,369,342.59/151,429.65
  6. Step 6: Final answer
    x = 123,267.60

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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.