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Finding the Fourth Proportional to 188,707.50, 260,417.16 and 103,825.98

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Solution

The fourth proportional to 188,707.50, 260,417.16 and 103,825.98 is: 143,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,707.50 : 260,417.16 = 103,825.98 : x
  2. Step 2: Convert to fraction form
    188,707.50/260,417.16 = 103,825.98/x
  3. Step 3: Cross multiply
    188,707.50x = 260,417.16 × 103,825.98
  4. Step 4: Simplify right side
    188,707.50x = 27,038,066,845.82
  5. Step 5: Solve for x
    x = 27,038,066,845.82/188,707.50
  6. Step 6: Final answer
    x = 143,280.30

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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.