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Finding the Fourth Proportional to 102,987.40, 144,493.40 and 102,987.40

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Solution

The fourth proportional to 102,987.40, 144,493.40 and 102,987.40 is: 144,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,987.40 : 144,493.40 = 102,987.40 : x
  2. Step 2: Convert to fraction form
    102,987.40/144,493.40 = 102,987.40/x
  3. Step 3: Cross multiply
    102,987.40x = 144,493.40 × 102,987.40
  4. Step 4: Simplify right side
    102,987.40x = 14,880,999,583.16
  5. Step 5: Solve for x
    x = 14,880,999,583.16/102,987.40
  6. Step 6: Final answer
    x = 144,493.40

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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.