Home / 145,985.29-219,228.09-90,155.77

Finding the Fourth Proportional to 145,985.29, 219,228.09 and 90,155.77

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Solution

The fourth proportional to 145,985.29, 219,228.09 and 90,155.77 is: 135,388.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,985.29 : 219,228.09 = 90,155.77 : x
  2. Step 2: Convert to fraction form
    145,985.29/219,228.09 = 90,155.77/x
  3. Step 3: Cross multiply
    145,985.29x = 219,228.09 × 90,155.77
  4. Step 4: Simplify right side
    145,985.29x = 19,764,677,259.58
  5. Step 5: Solve for x
    x = 19,764,677,259.58/145,985.29
  6. Step 6: Final answer
    x = 135,388.14

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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.