Home / 128,091.02-176,755.11-74,358.86

Finding the Fourth Proportional to 128,091.02, 176,755.11 and 74,358.86

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Solution

The fourth proportional to 128,091.02, 176,755.11 and 74,358.86 is: 102,609.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,091.02 : 176,755.11 = 74,358.86 : x
  2. Step 2: Convert to fraction form
    128,091.02/176,755.11 = 74,358.86/x
  3. Step 3: Cross multiply
    128,091.02x = 176,755.11 × 74,358.86
  4. Step 4: Simplify right side
    128,091.02x = 13,143,308,478.77
  5. Step 5: Solve for x
    x = 13,143,308,478.77/128,091.02
  6. Step 6: Final answer
    x = 102,609.13

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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.