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Finding the Fourth Proportional to 150,653.84, 207,958.20 and 129,347.60

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Solution

The fourth proportional to 150,653.84, 207,958.20 and 129,347.60 is: 178,547.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,653.84 : 207,958.20 = 129,347.60 : x
  2. Step 2: Convert to fraction form
    150,653.84/207,958.20 = 129,347.60/x
  3. Step 3: Cross multiply
    150,653.84x = 207,958.20 × 129,347.60
  4. Step 4: Simplify right side
    150,653.84x = 26,898,894,070.32
  5. Step 5: Solve for x
    x = 26,898,894,070.32/150,653.84
  6. Step 6: Final answer
    x = 178,547.68

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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.