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Finding the Fourth Proportional to 80,603.90, 112,962.10 and 80,603.90

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Solution

The fourth proportional to 80,603.90, 112,962.10 and 80,603.90 is: 112,962.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,603.90 : 112,962.10 = 80,603.90 : x
  2. Step 2: Convert to fraction form
    80,603.90/112,962.10 = 80,603.90/x
  3. Step 3: Cross multiply
    80,603.90x = 112,962.10 × 80,603.90
  4. Step 4: Simplify right side
    80,603.90x = 9,105,185,812.19
  5. Step 5: Solve for x
    x = 9,105,185,812.19/80,603.90
  6. Step 6: Final answer
    x = 112,962.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.