Home / 99,645,368.10-149,468,052.15-81,470,085.90

Finding the Fourth Proportional to 99,645,368.10, 149,468,052.15 and 81,470,085.90

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Solution

The fourth proportional to 99,645,368.10, 149,468,052.15 and 81,470,085.90 is: 122,205,128.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645,368.10 : 149,468,052.15 = 81,470,085.90 : x
  2. Step 2: Convert to fraction form
    99,645,368.10/149,468,052.15 = 81,470,085.90/x
  3. Step 3: Cross multiply
    99,645,368.10x = 149,468,052.15 × 81,470,085.90
  4. Step 4: Simplify right side
    99,645,368.10x = 12,177,175,047,966,182
  5. Step 5: Solve for x
    x = 12,177,175,047,966,182/99,645,368.10
  6. Step 6: Final answer
    x = 122,205,128.85

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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.