Home / 152,839.90-210,932.40-84,870.10

Finding the Fourth Proportional to 152,839.90, 210,932.40 and 84,870.10

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Solution

The fourth proportional to 152,839.90, 210,932.40 and 84,870.10 is: 117,128.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,839.90 : 210,932.40 = 84,870.10 : x
  2. Step 2: Convert to fraction form
    152,839.90/210,932.40 = 84,870.10/x
  3. Step 3: Cross multiply
    152,839.90x = 210,932.40 × 84,870.10
  4. Step 4: Simplify right side
    152,839.90x = 17,901,853,881.24
  5. Step 5: Solve for x
    x = 17,901,853,881.24/152,839.90
  6. Step 6: Final answer
    x = 117,128.14

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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.