Home / 151,001.64-208,406.34-87,378.12

Finding the Fourth Proportional to 151,001.64, 208,406.34 and 87,378.12

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Solution

The fourth proportional to 151,001.64, 208,406.34 and 87,378.12 is: 120,595.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,001.64 : 208,406.34 = 87,378.12 : x
  2. Step 2: Convert to fraction form
    151,001.64/208,406.34 = 87,378.12/x
  3. Step 3: Cross multiply
    151,001.64x = 208,406.34 × 87,378.12
  4. Step 4: Simplify right side
    151,001.64x = 18,210,154,185.28
  5. Step 5: Solve for x
    x = 18,210,154,185.28/151,001.64
  6. Step 6: Final answer
    x = 120,595.74

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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.