Home / 210,976.12-316,430.07-77,919.04

Finding the Fourth Proportional to 210,976.12, 316,430.07 and 77,919.04

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Solution

The fourth proportional to 210,976.12, 316,430.07 and 77,919.04 is: 116,865.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,976.12 : 316,430.07 = 77,919.04 : x
  2. Step 2: Convert to fraction form
    210,976.12/316,430.07 = 77,919.04/x
  3. Step 3: Cross multiply
    210,976.12x = 316,430.07 × 77,919.04
  4. Step 4: Simplify right side
    210,976.12x = 24,655,927,281.53
  5. Step 5: Solve for x
    x = 24,655,927,281.53/210,976.12
  6. Step 6: Final answer
    x = 116,865.96

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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.