Home / 115,215.90-172,823.85-70,698.30

Finding the Fourth Proportional to 115,215.90, 172,823.85 and 70,698.30

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Solution

The fourth proportional to 115,215.90, 172,823.85 and 70,698.30 is: 106,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,215.90 : 172,823.85 = 70,698.30 : x
  2. Step 2: Convert to fraction form
    115,215.90/172,823.85 = 70,698.30/x
  3. Step 3: Cross multiply
    115,215.90x = 172,823.85 × 70,698.30
  4. Step 4: Simplify right side
    115,215.90x = 12,218,352,394.46
  5. Step 5: Solve for x
    x = 12,218,352,394.46/115,215.90
  6. Step 6: Final answer
    x = 106,047.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.