Home / 191,712.09-287,536.95-90,509.94

Finding the Fourth Proportional to 191,712.09, 287,536.95 and 90,509.94

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Solution

The fourth proportional to 191,712.09, 287,536.95 and 90,509.94 is: 135,750.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,712.09 : 287,536.95 = 90,509.94 : x
  2. Step 2: Convert to fraction form
    191,712.09/287,536.95 = 90,509.94/x
  3. Step 3: Cross multiply
    191,712.09x = 287,536.95 × 90,509.94
  4. Step 4: Simplify right side
    191,712.09x = 26,024,952,092.28
  5. Step 5: Solve for x
    x = 26,024,952,092.28/191,712.09
  6. Step 6: Final answer
    x = 135,750.19

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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.