Home / 128,047.04-176,705.07-71,458.46

Finding the Fourth Proportional to 128,047.04, 176,705.07 and 71,458.46

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Solution

The fourth proportional to 128,047.04, 176,705.07 and 71,458.46 is: 98,612.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,047.04 : 176,705.07 = 71,458.46 : x
  2. Step 2: Convert to fraction form
    128,047.04/176,705.07 = 71,458.46/x
  3. Step 3: Cross multiply
    128,047.04x = 176,705.07 × 71,458.46
  4. Step 4: Simplify right side
    128,047.04x = 12,627,072,176.39
  5. Step 5: Solve for x
    x = 12,627,072,176.39/128,047.04
  6. Step 6: Final answer
    x = 98,612.76

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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.