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Finding the Fourth Proportional to 152,057.81, 209,855.03 and 84,079.91

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Solution

The fourth proportional to 152,057.81, 209,855.03 and 84,079.91 is: 116,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,057.81 : 209,855.03 = 84,079.91 : x
  2. Step 2: Convert to fraction form
    152,057.81/209,855.03 = 84,079.91/x
  3. Step 3: Cross multiply
    152,057.81x = 209,855.03 × 84,079.91
  4. Step 4: Simplify right side
    152,057.81x = 17,644,590,565.77
  5. Step 5: Solve for x
    x = 17,644,590,565.77/152,057.81
  6. Step 6: Final answer
    x = 116,038.70

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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.