Home / 125,038.29-172,189.31-108,678.31

Finding the Fourth Proportional to 125,038.29, 172,189.31 and 108,678.31

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Solution

The fourth proportional to 125,038.29, 172,189.31 and 108,678.31 is: 149,660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,038.29 : 172,189.31 = 108,678.31 : x
  2. Step 2: Convert to fraction form
    125,038.29/172,189.31 = 108,678.31/x
  3. Step 3: Cross multiply
    125,038.29x = 172,189.31 × 108,678.31
  4. Step 4: Simplify right side
    125,038.29x = 18,713,242,882.71
  5. Step 5: Solve for x
    x = 18,713,242,882.71/125,038.29
  6. Step 6: Final answer
    x = 149,660.10

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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.