Home / 145,656.68-201,009.98-81,996.76

Finding the Fourth Proportional to 145,656.68, 201,009.98 and 81,996.76

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Solution

The fourth proportional to 145,656.68, 201,009.98 and 81,996.76 is: 113,157.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,656.68 : 201,009.98 = 81,996.76 : x
  2. Step 2: Convert to fraction form
    145,656.68/201,009.98 = 81,996.76/x
  3. Step 3: Cross multiply
    145,656.68x = 201,009.98 × 81,996.76
  4. Step 4: Simplify right side
    145,656.68x = 16,482,167,087.66
  5. Step 5: Solve for x
    x = 16,482,167,087.66/145,656.68
  6. Step 6: Final answer
    x = 113,157.65

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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.