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Finding the Fourth Proportional to 152,689.08, 210,711.48 and 84,707.40

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Solution

The fourth proportional to 152,689.08, 210,711.48 and 84,707.40 is: 116,896.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,689.08 : 210,711.48 = 84,707.40 : x
  2. Step 2: Convert to fraction form
    152,689.08/210,711.48 = 84,707.40/x
  3. Step 3: Cross multiply
    152,689.08x = 210,711.48 × 84,707.40
  4. Step 4: Simplify right side
    152,689.08x = 17,848,821,620.95
  5. Step 5: Solve for x
    x = 17,848,821,620.95/152,689.08
  6. Step 6: Final answer
    x = 116,896.52

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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.