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Finding the Fourth Proportional to 152,791.50, 210,842.55 and 84,809.82

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Solution

The fourth proportional to 152,791.50, 210,842.55 and 84,809.82 is: 117,032.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,791.50 : 210,842.55 = 84,809.82 : x
  2. Step 2: Convert to fraction form
    152,791.50/210,842.55 = 84,809.82/x
  3. Step 3: Cross multiply
    152,791.50x = 210,842.55 × 84,809.82
  4. Step 4: Simplify right side
    152,791.50x = 17,881,518,713.84
  5. Step 5: Solve for x
    x = 17,881,518,713.84/152,791.50
  6. Step 6: Final answer
    x = 117,032.16

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1.5x scale

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.