Home / 124,506.12-172,005.81-81,587.60

Finding the Fourth Proportional to 124,506.12, 172,005.81 and 81,587.60

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Solution

The fourth proportional to 124,506.12, 172,005.81 and 81,587.60 is: 112,713.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,506.12 : 172,005.81 = 81,587.60 : x
  2. Step 2: Convert to fraction form
    124,506.12/172,005.81 = 81,587.60/x
  3. Step 3: Cross multiply
    124,506.12x = 172,005.81 × 81,587.60
  4. Step 4: Simplify right side
    124,506.12x = 14,033,540,363.93
  5. Step 5: Solve for x
    x = 14,033,540,363.93/124,506.12
  6. Step 6: Final answer
    x = 112,713.66

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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.