Home / 129,254.01-178,387.16-72,676.32

Finding the Fourth Proportional to 129,254.01, 178,387.16 and 72,676.32

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Solution

The fourth proportional to 129,254.01, 178,387.16 and 72,676.32 is: 100,302.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,254.01 : 178,387.16 = 72,676.32 : x
  2. Step 2: Convert to fraction form
    129,254.01/178,387.16 = 72,676.32/x
  3. Step 3: Cross multiply
    129,254.01x = 178,387.16 × 72,676.32
  4. Step 4: Simplify right side
    129,254.01x = 12,964,521,960.67
  5. Step 5: Solve for x
    x = 12,964,521,960.67/129,254.01
  6. Step 6: Final answer
    x = 100,302.67

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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.