Home / 143,746.29-215,381.07-87,416.01

Finding the Fourth Proportional to 143,746.29, 215,381.07 and 87,416.01

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Solution

The fourth proportional to 143,746.29, 215,381.07 and 87,416.01 is: 130,979.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,746.29 : 215,381.07 = 87,416.01 : x
  2. Step 2: Convert to fraction form
    143,746.29/215,381.07 = 87,416.01/x
  3. Step 3: Cross multiply
    143,746.29x = 215,381.07 × 87,416.01
  4. Step 4: Simplify right side
    143,746.29x = 18,827,753,768.93
  5. Step 5: Solve for x
    x = 18,827,753,768.93/143,746.29
  6. Step 6: Final answer
    x = 130,979.06

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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.