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Finding the Fourth Proportional to 152,785.42, 210,840.70 and 84,798.41

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Solution

The fourth proportional to 152,785.42, 210,840.70 and 84,798.41 is: 117,020.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,785.42 : 210,840.70 = 84,798.41 : x
  2. Step 2: Convert to fraction form
    152,785.42/210,840.70 = 84,798.41/x
  3. Step 3: Cross multiply
    152,785.42x = 210,840.70 × 84,798.41
  4. Step 4: Simplify right side
    152,785.42x = 17,878,955,281.08
  5. Step 5: Solve for x
    x = 17,878,955,281.08/152,785.42
  6. Step 6: Final answer
    x = 117,020.04

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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.