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Finding the Fourth Proportional to 188,706.72, 260,417.35 and 102,666.20

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Solution

The fourth proportional to 188,706.72, 260,417.35 and 102,666.20 is: 141,680.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,706.72 : 260,417.35 = 102,666.20 : x
  2. Step 2: Convert to fraction form
    188,706.72/260,417.35 = 102,666.20/x
  3. Step 3: Cross multiply
    188,706.72x = 260,417.35 × 102,666.20
  4. Step 4: Simplify right side
    188,706.72x = 26,736,057,987.32
  5. Step 5: Solve for x
    x = 26,736,057,987.32/188,706.72
  6. Step 6: Final answer
    x = 141,680.47

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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.