Home / 128,301.64-177,049.10-70,937.62

Finding the Fourth Proportional to 128,301.64, 177,049.10 and 70,937.62

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Solution

The fourth proportional to 128,301.64, 177,049.10 and 70,937.62 is: 97,889.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,301.64 : 177,049.10 = 70,937.62 : x
  2. Step 2: Convert to fraction form
    128,301.64/177,049.10 = 70,937.62/x
  3. Step 3: Cross multiply
    128,301.64x = 177,049.10 × 70,937.62
  4. Step 4: Simplify right side
    128,301.64x = 12,559,441,511.86
  5. Step 5: Solve for x
    x = 12,559,441,511.86/128,301.64
  6. Step 6: Final answer
    x = 97,889.95

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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.