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Finding the Fourth Proportional to 100,535.64, 151,509.51 and 90,552.88

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Solution

The fourth proportional to 100,535.64, 151,509.51 and 90,552.88 is: 136,465.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,535.64 : 151,509.51 = 90,552.88 : x
  2. Step 2: Convert to fraction form
    100,535.64/151,509.51 = 90,552.88/x
  3. Step 3: Cross multiply
    100,535.64x = 151,509.51 × 90,552.88
  4. Step 4: Simplify right side
    100,535.64x = 13,719,622,477.89
  5. Step 5: Solve for x
    x = 13,719,622,477.89/100,535.64
  6. Step 6: Final answer
    x = 136,465.26

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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.