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Finding the Fourth Proportional to 152,641.80, 210,655.89 and 84,680.37

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Solution

The fourth proportional to 152,641.80, 210,655.89 and 84,680.37 is: 116,864.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,641.80 : 210,655.89 = 84,680.37 : x
  2. Step 2: Convert to fraction form
    152,641.80/210,655.89 = 84,680.37/x
  3. Step 3: Cross multiply
    152,641.80x = 210,655.89 × 84,680.37
  4. Step 4: Simplify right side
    152,641.80x = 17,838,418,707.88
  5. Step 5: Solve for x
    x = 17,838,418,707.88/152,641.80
  6. Step 6: Final answer
    x = 116,864.57

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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.