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Finding the Fourth Proportional to 127,152, 175,473.60 and 70,568.64

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Solution

The fourth proportional to 127,152, 175,473.60 and 70,568.64 is: 97,386.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,152 : 175,473.60 = 70,568.64 : x
  2. Step 2: Convert to fraction form
    127,152/175,473.60 = 70,568.64/x
  3. Step 3: Cross multiply
    127,152x = 175,473.60 × 70,568.64
  4. Step 4: Simplify right side
    127,152x = 12,382,933,307.90
  5. Step 5: Solve for x
    x = 12,382,933,307.90/127,152
  6. Step 6: Final answer
    x = 97,386.85

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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.