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Finding the Fourth Proportional to 138,870.14, 191,497.47 and 118,793.48

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Solution

The fourth proportional to 138,870.14, 191,497.47 and 118,793.48 is: 163,812.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,870.14 : 191,497.47 = 118,793.48 : x
  2. Step 2: Convert to fraction form
    138,870.14/191,497.47 = 118,793.48/x
  3. Step 3: Cross multiply
    138,870.14x = 191,497.47 × 118,793.48
  4. Step 4: Simplify right side
    138,870.14x = 22,748,650,872.50
  5. Step 5: Solve for x
    x = 22,748,650,872.50/138,870.14
  6. Step 6: Final answer
    x = 163,812.40

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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.