Home / 125,142.36-172,695.41-67,780.35

Finding the Fourth Proportional to 125,142.36, 172,695.41 and 67,780.35

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Solution

The fourth proportional to 125,142.36, 172,695.41 and 67,780.35 is: 93,536.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,142.36 : 172,695.41 = 67,780.35 : x
  2. Step 2: Convert to fraction form
    125,142.36/172,695.41 = 67,780.35/x
  3. Step 3: Cross multiply
    125,142.36x = 172,695.41 × 67,780.35
  4. Step 4: Simplify right side
    125,142.36x = 11,705,355,333.19
  5. Step 5: Solve for x
    x = 11,705,355,333.19/125,142.36
  6. Step 6: Final answer
    x = 93,536.32

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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.