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Finding the Fourth Proportional to 125,728.32, 188,373.12 and 104,802.84

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Solution

The fourth proportional to 125,728.32, 188,373.12 and 104,802.84 is: 157,021.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,728.32 : 188,373.12 = 104,802.84 : x
  2. Step 2: Convert to fraction form
    125,728.32/188,373.12 = 104,802.84/x
  3. Step 3: Cross multiply
    125,728.32x = 188,373.12 × 104,802.84
  4. Step 4: Simplify right side
    125,728.32x = 19,742,037,955.66
  5. Step 5: Solve for x
    x = 19,742,037,955.66/125,728.32
  6. Step 6: Final answer
    x = 157,021.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.