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Finding the Fourth Proportional to 120,130.56, 181,006.72 and 99,529.02

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Solution

The fourth proportional to 120,130.56, 181,006.72 and 99,529.02 is: 149,965.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,130.56 : 181,006.72 = 99,529.02 : x
  2. Step 2: Convert to fraction form
    120,130.56/181,006.72 = 99,529.02/x
  3. Step 3: Cross multiply
    120,130.56x = 181,006.72 × 99,529.02
  4. Step 4: Simplify right side
    120,130.56x = 18,015,421,206.19
  5. Step 5: Solve for x
    x = 18,015,421,206.19/120,130.56
  6. Step 6: Final answer
    x = 149,965.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.