Home / 89,723.90-134,434.65-70,931.90

Finding the Fourth Proportional to 89,723.90, 134,434.65 and 70,931.90

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Solution

The fourth proportional to 89,723.90, 134,434.65 and 70,931.90 is: 106,278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,723.90 : 134,434.65 = 70,931.90 : x
  2. Step 2: Convert to fraction form
    89,723.90/134,434.65 = 70,931.90/x
  3. Step 3: Cross multiply
    89,723.90x = 134,434.65 × 70,931.90
  4. Step 4: Simplify right side
    89,723.90x = 9,535,705,150.34
  5. Step 5: Solve for x
    x = 9,535,705,150.34/89,723.90
  6. Step 6: Final answer
    x = 106,278.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.