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Finding the Fourth Proportional to 152,785.30, 210,840.53 and 84,798.28

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Solution

The fourth proportional to 152,785.30, 210,840.53 and 84,798.28 is: 117,019.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,785.30 : 210,840.53 = 84,798.28 : x
  2. Step 2: Convert to fraction form
    152,785.30/210,840.53 = 84,798.28/x
  3. Step 3: Cross multiply
    152,785.30x = 210,840.53 × 84,798.28
  4. Step 4: Simplify right side
    152,785.30x = 17,878,914,298.29
  5. Step 5: Solve for x
    x = 17,878,914,298.29/152,785.30
  6. Step 6: Final answer
    x = 117,019.86

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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.