Home / 128,254.16-176,990.37-71,665.58

Finding the Fourth Proportional to 128,254.16, 176,990.37 and 71,665.58

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Solution

The fourth proportional to 128,254.16, 176,990.37 and 71,665.58 is: 98,898.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,254.16 : 176,990.37 = 71,665.58 : x
  2. Step 2: Convert to fraction form
    128,254.16/176,990.37 = 71,665.58/x
  3. Step 3: Cross multiply
    128,254.16x = 176,990.37 × 71,665.58
  4. Step 4: Simplify right side
    128,254.16x = 12,684,117,520.46
  5. Step 5: Solve for x
    x = 12,684,117,520.46/128,254.16
  6. Step 6: Final answer
    x = 98,898.29

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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.