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Finding the Fourth Proportional to 156,785.48, 216,365.02 and 85,165.48

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Solution

The fourth proportional to 156,785.48, 216,365.02 and 85,165.48 is: 117,528.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,785.48 : 216,365.02 = 85,165.48 : x
  2. Step 2: Convert to fraction form
    156,785.48/216,365.02 = 85,165.48/x
  3. Step 3: Cross multiply
    156,785.48x = 216,365.02 × 85,165.48
  4. Step 4: Simplify right side
    156,785.48x = 18,426,830,783.51
  5. Step 5: Solve for x
    x = 18,426,830,783.51/156,785.48
  6. Step 6: Final answer
    x = 117,528.94

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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.