Home / 191,055.36-286,146-91,285.68

Finding the Fourth Proportional to 191,055.36, 286,146 and 91,285.68

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Solution

The fourth proportional to 191,055.36, 286,146 and 91,285.68 is: 136,719.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,055.36 : 286,146 = 91,285.68 : x
  2. Step 2: Convert to fraction form
    191,055.36/286,146 = 91,285.68/x
  3. Step 3: Cross multiply
    191,055.36x = 286,146 × 91,285.68
  4. Step 4: Simplify right side
    191,055.36x = 26,121,032,189.28
  5. Step 5: Solve for x
    x = 26,121,032,189.28/191,055.36
  6. Step 6: Final answer
    x = 136,719.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.