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Finding the Fourth Proportional to 162,139.68, 243,218.16 and 51,340.32

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Solution

The fourth proportional to 162,139.68, 243,218.16 and 51,340.32 is: 77,013.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,139.68 : 243,218.16 = 51,340.32 : x
  2. Step 2: Convert to fraction form
    162,139.68/243,218.16 = 51,340.32/x
  3. Step 3: Cross multiply
    162,139.68x = 243,218.16 × 51,340.32
  4. Step 4: Simplify right side
    162,139.68x = 12,486,898,164.21
  5. Step 5: Solve for x
    x = 12,486,898,164.21/162,139.68
  6. Step 6: Final answer
    x = 77,013.22

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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.