Home / 142,905.03-214,402.16-86,041.27

Finding the Fourth Proportional to 142,905.03, 214,402.16 and 86,041.27

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Solution

The fourth proportional to 142,905.03, 214,402.16 and 86,041.27 is: 129,088.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,905.03 : 214,402.16 = 86,041.27 : x
  2. Step 2: Convert to fraction form
    142,905.03/214,402.16 = 86,041.27/x
  3. Step 3: Cross multiply
    142,905.03x = 214,402.16 × 86,041.27
  4. Step 4: Simplify right side
    142,905.03x = 18,447,434,137.14
  5. Step 5: Solve for x
    x = 18,447,434,137.14/142,905.03
  6. Step 6: Final answer
    x = 129,088.77

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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.