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Finding the Fourth Proportional to 124,645.91, 172,017.41 and 70,935.80

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Solution

The fourth proportional to 124,645.91, 172,017.41 and 70,935.80 is: 97,894.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,645.91 : 172,017.41 = 70,935.80 : x
  2. Step 2: Convert to fraction form
    124,645.91/172,017.41 = 70,935.80/x
  3. Step 3: Cross multiply
    124,645.91x = 172,017.41 × 70,935.80
  4. Step 4: Simplify right side
    124,645.91x = 12,202,191,377.51
  5. Step 5: Solve for x
    x = 12,202,191,377.51/124,645.91
  6. Step 6: Final answer
    x = 97,894.84

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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.