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Finding the Fourth Proportional to 125,420.64, 173,080.32 and 71,706.84

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Solution

The fourth proportional to 125,420.64, 173,080.32 and 71,706.84 is: 98,955.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,420.64 : 173,080.32 = 71,706.84 : x
  2. Step 2: Convert to fraction form
    125,420.64/173,080.32 = 71,706.84/x
  3. Step 3: Cross multiply
    125,420.64x = 173,080.32 × 71,706.84
  4. Step 4: Simplify right side
    125,420.64x = 12,411,042,813.39
  5. Step 5: Solve for x
    x = 12,411,042,813.39/125,420.64
  6. Step 6: Final answer
    x = 98,955.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.