Home / 210,222.16-315,145.68-77,071.32

Finding the Fourth Proportional to 210,222.16, 315,145.68 and 77,071.32

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Solution

The fourth proportional to 210,222.16, 315,145.68 and 77,071.32 is: 115,538.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,222.16 : 315,145.68 = 77,071.32 : x
  2. Step 2: Convert to fraction form
    210,222.16/315,145.68 = 77,071.32/x
  3. Step 3: Cross multiply
    210,222.16x = 315,145.68 × 77,071.32
  4. Step 4: Simplify right side
    210,222.16x = 24,288,693,549.90
  5. Step 5: Solve for x
    x = 24,288,693,549.90/210,222.16
  6. Step 6: Final answer
    x = 115,538.22

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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.