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Finding the Fourth Proportional to 99,072,649.80, 148,608,974.70 and 60,330,600.90

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Solution

The fourth proportional to 99,072,649.80, 148,608,974.70 and 60,330,600.90 is: 90,495,901.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,072,649.80 : 148,608,974.70 = 60,330,600.90 : x
  2. Step 2: Convert to fraction form
    99,072,649.80/148,608,974.70 = 60,330,600.90/x
  3. Step 3: Cross multiply
    99,072,649.80x = 148,608,974.70 × 60,330,600.90
  4. Step 4: Simplify right side
    99,072,649.80x = 8,965,668,742,783,896
  5. Step 5: Solve for x
    x = 8,965,668,742,783,896/99,072,649.80
  6. Step 6: Final answer
    x = 90,495,901.35

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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.