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Finding the Fourth Proportional to 127,987.86, 176,621.81 and 70,627.62

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Solution

The fourth proportional to 127,987.86, 176,621.81 and 70,627.62 is: 97,465.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,987.86 : 176,621.81 = 70,627.62 : x
  2. Step 2: Convert to fraction form
    127,987.86/176,621.81 = 70,627.62/x
  3. Step 3: Cross multiply
    127,987.86x = 176,621.81 × 70,627.62
  4. Step 4: Simplify right side
    127,987.86x = 12,474,378,080.39
  5. Step 5: Solve for x
    x = 12,474,378,080.39/127,987.86
  6. Step 6: Final answer
    x = 97,465.32

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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.