Home / 143,444.79-215,021.88-72,152.01

Finding the Fourth Proportional to 143,444.79, 215,021.88 and 72,152.01

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Solution

The fourth proportional to 143,444.79, 215,021.88 and 72,152.01 is: 108,154.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,444.79 : 215,021.88 = 72,152.01 : x
  2. Step 2: Convert to fraction form
    143,444.79/215,021.88 = 72,152.01/x
  3. Step 3: Cross multiply
    143,444.79x = 215,021.88 × 72,152.01
  4. Step 4: Simplify right side
    143,444.79x = 15,514,260,835.98
  5. Step 5: Solve for x
    x = 15,514,260,835.98/143,444.79
  6. Step 6: Final answer
    x = 108,154.93

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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.