Home / 127,011.36-175,240-100,070.24

Finding the Fourth Proportional to 127,011.36, 175,240 and 100,070.24

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Solution

The fourth proportional to 127,011.36, 175,240 and 100,070.24 is: 138,068.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,011.36 : 175,240 = 100,070.24 : x
  2. Step 2: Convert to fraction form
    127,011.36/175,240 = 100,070.24/x
  3. Step 3: Cross multiply
    127,011.36x = 175,240 × 100,070.24
  4. Step 4: Simplify right side
    127,011.36x = 17,536,308,857.60
  5. Step 5: Solve for x
    x = 17,536,308,857.60/127,011.36
  6. Step 6: Final answer
    x = 138,068.82

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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.