Home / 103,545.83-155,091.08-85,572.79

Finding the Fourth Proportional to 103,545.83, 155,091.08 and 85,572.79

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Solution

The fourth proportional to 103,545.83, 155,091.08 and 85,572.79 is: 128,171.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,545.83 : 155,091.08 = 85,572.79 : x
  2. Step 2: Convert to fraction form
    103,545.83/155,091.08 = 85,572.79/x
  3. Step 3: Cross multiply
    103,545.83x = 155,091.08 × 85,572.79
  4. Step 4: Simplify right side
    103,545.83x = 13,271,576,419.71
  5. Step 5: Solve for x
    x = 13,271,576,419.71/103,545.83
  6. Step 6: Final answer
    x = 128,171.04

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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.