Home / 138,567.28-191,095.32-90,803.28

Finding the Fourth Proportional to 138,567.28, 191,095.32 and 90,803.28

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Solution

The fourth proportional to 138,567.28, 191,095.32 and 90,803.28 is: 125,224.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,567.28 : 191,095.32 = 90,803.28 : x
  2. Step 2: Convert to fraction form
    138,567.28/191,095.32 = 90,803.28/x
  3. Step 3: Cross multiply
    138,567.28x = 191,095.32 × 90,803.28
  4. Step 4: Simplify right side
    138,567.28x = 17,352,081,848.65
  5. Step 5: Solve for x
    x = 17,352,081,848.65/138,567.28
  6. Step 6: Final answer
    x = 125,224.96

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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.