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Finding the Fourth Proportional to 152,488.79, 210,435.75 and 84,506.88

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Solution

The fourth proportional to 152,488.79, 210,435.75 and 84,506.88 is: 116,620.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,488.79 : 210,435.75 = 84,506.88 : x
  2. Step 2: Convert to fraction form
    152,488.79/210,435.75 = 84,506.88/x
  3. Step 3: Cross multiply
    152,488.79x = 210,435.75 × 84,506.88
  4. Step 4: Simplify right side
    152,488.79x = 17,783,267,409.51
  5. Step 5: Solve for x
    x = 17,783,267,409.51/152,488.79
  6. Step 6: Final answer
    x = 116,620.16

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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.