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Finding the Fourth Proportional to 125,358.99, 172,969.98 and 74,349.34

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Solution

The fourth proportional to 125,358.99, 172,969.98 and 74,349.34 is: 102,587.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,358.99 : 172,969.98 = 74,349.34 : x
  2. Step 2: Convert to fraction form
    125,358.99/172,969.98 = 74,349.34/x
  3. Step 3: Cross multiply
    125,358.99x = 172,969.98 × 74,349.34
  4. Step 4: Simplify right side
    125,358.99x = 12,860,204,532.75
  5. Step 5: Solve for x
    x = 12,860,204,532.75/125,358.99
  6. Step 6: Final answer
    x = 102,587.01

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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.