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Finding the Fourth Proportional to 152,875.09, 210,963.54 and 84,890.29

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Solution

The fourth proportional to 152,875.09, 210,963.54 and 84,890.29 is: 117,146.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,875.09 : 210,963.54 = 84,890.29 : x
  2. Step 2: Convert to fraction form
    152,875.09/210,963.54 = 84,890.29/x
  3. Step 3: Cross multiply
    152,875.09x = 210,963.54 × 84,890.29
  4. Step 4: Simplify right side
    152,875.09x = 17,908,756,090.03
  5. Step 5: Solve for x
    x = 17,908,756,090.03/152,875.09
  6. Step 6: Final answer
    x = 117,146.33

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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.