Home / 162,004.90-243,007.35-128,543.80

Finding the Fourth Proportional to 162,004.90, 243,007.35 and 128,543.80

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Solution

The fourth proportional to 162,004.90, 243,007.35 and 128,543.80 is: 192,815.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,004.90 : 243,007.35 = 128,543.80 : x
  2. Step 2: Convert to fraction form
    162,004.90/243,007.35 = 128,543.80/x
  3. Step 3: Cross multiply
    162,004.90x = 243,007.35 × 128,543.80
  4. Step 4: Simplify right side
    162,004.90x = 31,237,088,196.93
  5. Step 5: Solve for x
    x = 31,237,088,196.93/162,004.90
  6. Step 6: Final answer
    x = 192,815.70

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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.