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Finding the Fourth Proportional to 159,809.19, 220,529.76 and 87,210.24

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Solution

The fourth proportional to 159,809.19, 220,529.76 and 87,210.24 is: 120,346.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,809.19 : 220,529.76 = 87,210.24 : x
  2. Step 2: Convert to fraction form
    159,809.19/220,529.76 = 87,210.24/x
  3. Step 3: Cross multiply
    159,809.19x = 220,529.76 × 87,210.24
  4. Step 4: Simplify right side
    159,809.19x = 19,232,452,142.72
  5. Step 5: Solve for x
    x = 19,232,452,142.72/159,809.19
  6. Step 6: Final answer
    x = 120,346.35

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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.