Home / 191,116.77-286,709.75-78,734.53

Finding the Fourth Proportional to 191,116.77, 286,709.75 and 78,734.53

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Solution

The fourth proportional to 191,116.77, 286,709.75 and 78,734.53 is: 118,116.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,116.77 : 286,709.75 = 78,734.53 : x
  2. Step 2: Convert to fraction form
    191,116.77/286,709.75 = 78,734.53/x
  3. Step 3: Cross multiply
    191,116.77x = 286,709.75 × 78,734.53
  4. Step 4: Simplify right side
    191,116.77x = 22,573,957,894.08
  5. Step 5: Solve for x
    x = 22,573,957,894.08/191,116.77
  6. Step 6: Final answer
    x = 118,116.05

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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.