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Finding the Fourth Proportional to 125,119.35, 172,621.80 and 71,365.68

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Solution

The fourth proportional to 125,119.35, 172,621.80 and 71,365.68 is: 98,460.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,119.35 : 172,621.80 = 71,365.68 : x
  2. Step 2: Convert to fraction form
    125,119.35/172,621.80 = 71,365.68/x
  3. Step 3: Cross multiply
    125,119.35x = 172,621.80 × 71,365.68
  4. Step 4: Simplify right side
    125,119.35x = 12,319,272,139.82
  5. Step 5: Solve for x
    x = 12,319,272,139.82/125,119.35
  6. Step 6: Final answer
    x = 98,460.17

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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.