Home / 145,983.79-219,225.84-90,154.27

Finding the Fourth Proportional to 145,983.79, 219,225.84 and 90,154.27

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Solution

The fourth proportional to 145,983.79, 219,225.84 and 90,154.27 is: 135,385.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,983.79 : 219,225.84 = 90,154.27 : x
  2. Step 2: Convert to fraction form
    145,983.79/219,225.84 = 90,154.27/x
  3. Step 3: Cross multiply
    145,983.79x = 219,225.84 × 90,154.27
  4. Step 4: Simplify right side
    145,983.79x = 19,764,145,570.34
  5. Step 5: Solve for x
    x = 19,764,145,570.34/145,983.79
  6. Step 6: Final answer
    x = 135,385.89

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1.5x scale

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.