Home / 228,741.60-315,618.48-128,120.16

Finding the Fourth Proportional to 228,741.60, 315,618.48 and 128,120.16

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Solution

The fourth proportional to 228,741.60, 315,618.48 and 128,120.16 is: 176,780.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,741.60 : 315,618.48 = 128,120.16 : x
  2. Step 2: Convert to fraction form
    228,741.60/315,618.48 = 128,120.16/x
  3. Step 3: Cross multiply
    228,741.60x = 315,618.48 × 128,120.16
  4. Step 4: Simplify right side
    228,741.60x = 40,437,090,156.56
  5. Step 5: Solve for x
    x = 40,437,090,156.56/228,741.60
  6. Step 6: Final answer
    x = 176,780.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.