Home / 99,072,572.40-148,608,858.60-90,144,363.60

Finding the Fourth Proportional to 99,072,572.40, 148,608,858.60 and 90,144,363.60

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Solution

The fourth proportional to 99,072,572.40, 148,608,858.60 and 90,144,363.60 is: 135,216,545.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,072,572.40 : 148,608,858.60 = 90,144,363.60 : x
  2. Step 2: Convert to fraction form
    99,072,572.40/148,608,858.60 = 90,144,363.60/x
  3. Step 3: Cross multiply
    99,072,572.40x = 148,608,858.60 × 90,144,363.60
  4. Step 4: Simplify right side
    99,072,572.40x = 13,396,250,983,819,386
  5. Step 5: Solve for x
    x = 13,396,250,983,819,386/99,072,572.40
  6. Step 6: Final answer
    x = 135,216,545.40

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Similar ratio
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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.