Home / 143,904.60-215,856.90-77,376.06

Finding the Fourth Proportional to 143,904.60, 215,856.90 and 77,376.06

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Solution

The fourth proportional to 143,904.60, 215,856.90 and 77,376.06 is: 116,064.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,904.60 : 215,856.90 = 77,376.06 : x
  2. Step 2: Convert to fraction form
    143,904.60/215,856.90 = 77,376.06/x
  3. Step 3: Cross multiply
    143,904.60x = 215,856.90 × 77,376.06
  4. Step 4: Simplify right side
    143,904.60x = 16,702,156,445.81
  5. Step 5: Solve for x
    x = 16,702,156,445.81/143,904.60
  6. Step 6: Final answer
    x = 116,064.09

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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.