Home / 156,761.03-216,326.65-85,139.51

Finding the Fourth Proportional to 156,761.03, 216,326.65 and 85,139.51

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Solution

The fourth proportional to 156,761.03, 216,326.65 and 85,139.51 is: 117,490.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,761.03 : 216,326.65 = 85,139.51 : x
  2. Step 2: Convert to fraction form
    156,761.03/216,326.65 = 85,139.51/x
  3. Step 3: Cross multiply
    156,761.03x = 216,326.65 × 85,139.51
  4. Step 4: Simplify right side
    156,761.03x = 18,417,944,980.94
  5. Step 5: Solve for x
    x = 18,417,944,980.94/156,761.03
  6. Step 6: Final answer
    x = 117,490.58

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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.