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Finding the Fourth Proportional to 152,708.55, 210,730.68 and 84,724.80

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Solution

The fourth proportional to 152,708.55, 210,730.68 and 84,724.80 is: 116,916.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,708.55 : 210,730.68 = 84,724.80 : x
  2. Step 2: Convert to fraction form
    152,708.55/210,730.68 = 84,724.80/x
  3. Step 3: Cross multiply
    152,708.55x = 210,730.68 × 84,724.80
  4. Step 4: Simplify right side
    152,708.55x = 17,854,114,716.86
  5. Step 5: Solve for x
    x = 17,854,114,716.86/152,708.55
  6. Step 6: Final answer
    x = 116,916.27

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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.