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Finding the Fourth Proportional to 127,275, 175,639.56 and 70,686.84

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Solution

The fourth proportional to 127,275, 175,639.56 and 70,686.84 is: 97,547.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,275 : 175,639.56 = 70,686.84 : x
  2. Step 2: Convert to fraction form
    127,275/175,639.56 = 70,686.84/x
  3. Step 3: Cross multiply
    127,275x = 175,639.56 × 70,686.84
  4. Step 4: Simplify right side
    127,275x = 12,415,405,475.39
  5. Step 5: Solve for x
    x = 12,415,405,475.39/127,275
  6. Step 6: Final answer
    x = 97,547.87

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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.