Home / 102,688.64-141,705.23-57,357.60

Finding the Fourth Proportional to 102,688.64, 141,705.23 and 57,357.60

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Solution

The fourth proportional to 102,688.64, 141,705.23 and 57,357.60 is: 79,150.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,688.64 : 141,705.23 = 57,357.60 : x
  2. Step 2: Convert to fraction form
    102,688.64/141,705.23 = 57,357.60/x
  3. Step 3: Cross multiply
    102,688.64x = 141,705.23 × 57,357.60
  4. Step 4: Simplify right side
    102,688.64x = 8,127,871,900.25
  5. Step 5: Solve for x
    x = 8,127,871,900.25/102,688.64
  6. Step 6: Final answer
    x = 79,150.64

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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.