Home / 212,128.01-318,108.64-77,160.04

Finding the Fourth Proportional to 212,128.01, 318,108.64 and 77,160.04

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Solution

The fourth proportional to 212,128.01, 318,108.64 and 77,160.04 is: 115,709.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,128.01 : 318,108.64 = 77,160.04 : x
  2. Step 2: Convert to fraction form
    212,128.01/318,108.64 = 77,160.04/x
  3. Step 3: Cross multiply
    212,128.01x = 318,108.64 × 77,160.04
  4. Step 4: Simplify right side
    212,128.01x = 24,545,276,278.47
  5. Step 5: Solve for x
    x = 24,545,276,278.47/212,128.01
  6. Step 6: Final answer
    x = 115,709.74

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1.5x scale

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.