Home / 105,652.40-145,799.64-57,908.72

Finding the Fourth Proportional to 105,652.40, 145,799.64 and 57,908.72

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Solution

The fourth proportional to 105,652.40, 145,799.64 and 57,908.72 is: 79,913.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,652.40 : 145,799.64 = 57,908.72 : x
  2. Step 2: Convert to fraction form
    105,652.40/145,799.64 = 57,908.72/x
  3. Step 3: Cross multiply
    105,652.40x = 145,799.64 × 57,908.72
  4. Step 4: Simplify right side
    105,652.40x = 8,443,070,528.86
  5. Step 5: Solve for x
    x = 8,443,070,528.86/105,652.40
  6. Step 6: Final answer
    x = 79,913.67

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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.