Home / 210,981.18-316,470.81-86,322.18

Finding the Fourth Proportional to 210,981.18, 316,470.81 and 86,322.18

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Solution

The fourth proportional to 210,981.18, 316,470.81 and 86,322.18 is: 129,482.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,981.18 : 316,470.81 = 86,322.18 : x
  2. Step 2: Convert to fraction form
    210,981.18/316,470.81 = 86,322.18/x
  3. Step 3: Cross multiply
    210,981.18x = 316,470.81 × 86,322.18
  4. Step 4: Simplify right side
    210,981.18x = 27,318,450,225.57
  5. Step 5: Solve for x
    x = 27,318,450,225.57/210,981.18
  6. Step 6: Final answer
    x = 129,482.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.