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Finding the Fourth Proportional to 189,087.79, 260,937.66 and 103,047.46

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Solution

The fourth proportional to 189,087.79, 260,937.66 and 103,047.46 is: 142,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,087.79 : 260,937.66 = 103,047.46 : x
  2. Step 2: Convert to fraction form
    189,087.79/260,937.66 = 103,047.46/x
  3. Step 3: Cross multiply
    189,087.79x = 260,937.66 × 103,047.46
  4. Step 4: Simplify right side
    189,087.79x = 26,888,963,793.94
  5. Step 5: Solve for x
    x = 26,888,963,793.94/189,087.79
  6. Step 6: Final answer
    x = 142,203.60

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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.