Home / 127,637.30-176,187.67-100,342.18

Finding the Fourth Proportional to 127,637.30, 176,187.67 and 100,342.18

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Solution

The fourth proportional to 127,637.30, 176,187.67 and 100,342.18 is: 138,510.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,637.30 : 176,187.67 = 100,342.18 : x
  2. Step 2: Convert to fraction form
    127,637.30/176,187.67 = 100,342.18/x
  3. Step 3: Cross multiply
    127,637.30x = 176,187.67 × 100,342.18
  4. Step 4: Simplify right side
    127,637.30x = 17,679,054,439.67
  5. Step 5: Solve for x
    x = 17,679,054,439.67/127,637.30
  6. Step 6: Final answer
    x = 138,510.09

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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.