Home / 99,806,830.80-149,760,012.60-56,709,128.40

Finding the Fourth Proportional to 99,806,830.80, 149,760,012.60 and 56,709,128.40

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Solution

The fourth proportional to 99,806,830.80, 149,760,012.60 and 56,709,128.40 is: 85,091,969.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,806,830.80 : 149,760,012.60 = 56,709,128.40 : x
  2. Step 2: Convert to fraction form
    99,806,830.80/149,760,012.60 = 56,709,128.40/x
  3. Step 3: Cross multiply
    99,806,830.80x = 149,760,012.60 × 56,709,128.40
  4. Step 4: Simplify right side
    99,806,830.80x = 8,492,759,783,719,017
  5. Step 5: Solve for x
    x = 8,492,759,783,719,017/99,806,830.80
  6. Step 6: Final answer
    x = 85,091,969.31

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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.