Home / 145,789.56-201,120.81-85,322.76

Finding the Fourth Proportional to 145,789.56, 201,120.81 and 85,322.76

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Solution

The fourth proportional to 145,789.56, 201,120.81 and 85,322.76 is: 117,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,789.56 : 201,120.81 = 85,322.76 : x
  2. Step 2: Convert to fraction form
    145,789.56/201,120.81 = 85,322.76/x
  3. Step 3: Cross multiply
    145,789.56x = 201,120.81 × 85,322.76
  4. Step 4: Simplify right side
    145,789.56x = 17,160,182,602.64
  5. Step 5: Solve for x
    x = 17,160,182,602.64/145,789.56
  6. Step 6: Final answer
    x = 117,705.15

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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.