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Finding the Fourth Proportional to 152,530.03, 210,488.89 and 83,619.03

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Solution

The fourth proportional to 152,530.03, 210,488.89 and 83,619.03 is: 115,392.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,530.03 : 210,488.89 = 83,619.03 : x
  2. Step 2: Convert to fraction form
    152,530.03/210,488.89 = 83,619.03/x
  3. Step 3: Cross multiply
    152,530.03x = 210,488.89 × 83,619.03
  4. Step 4: Simplify right side
    152,530.03x = 17,600,876,807.58
  5. Step 5: Solve for x
    x = 17,600,876,807.58/152,530.03
  6. Step 6: Final answer
    x = 115,392.86

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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.