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Finding the Fourth Proportional to 152,957.61, 211,081.30 and 84,980.85

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Solution

The fourth proportional to 152,957.61, 211,081.30 and 84,980.85 is: 117,273.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,957.61 : 211,081.30 = 84,980.85 : x
  2. Step 2: Convert to fraction form
    152,957.61/211,081.30 = 84,980.85/x
  3. Step 3: Cross multiply
    152,957.61x = 211,081.30 × 84,980.85
  4. Step 4: Simplify right side
    152,957.61x = 17,937,868,293.11
  5. Step 5: Solve for x
    x = 17,937,868,293.11/152,957.61
  6. Step 6: Final answer
    x = 117,273.46

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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.