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Finding the Fourth Proportional to 200,085.87, 275,848.29 and 128,341.34

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Solution

The fourth proportional to 200,085.87, 275,848.29 and 128,341.34 is: 176,937.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,085.87 : 275,848.29 = 128,341.34 : x
  2. Step 2: Convert to fraction form
    200,085.87/275,848.29 = 128,341.34/x
  3. Step 3: Cross multiply
    200,085.87x = 275,848.29 × 128,341.34
  4. Step 4: Simplify right side
    200,085.87x = 35,402,737,796.07
  5. Step 5: Solve for x
    x = 35,402,737,796.07/200,085.87
  6. Step 6: Final answer
    x = 176,937.72

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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.