Home / 210,507,483.76-315,513,253.33-85,932,312.16

Finding the Fourth Proportional to 210,507,483.76, 315,513,253.33 and 85,932,312.16

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Solution

The fourth proportional to 210,507,483.76, 315,513,253.33 and 85,932,312.16 is: 128,797,242.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,507,483.76 : 315,513,253.33 = 85,932,312.16 : x
  2. Step 2: Convert to fraction form
    210,507,483.76/315,513,253.33 = 85,932,312.16/x
  3. Step 3: Cross multiply
    210,507,483.76x = 315,513,253.33 × 85,932,312.16
  4. Step 4: Simplify right side
    210,507,483.76x = 27,112,783,375,770,716
  5. Step 5: Solve for x
    x = 27,112,783,375,770,716/210,507,483.76
  6. Step 6: Final answer
    x = 128,797,242.22

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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.