Home / 191,140.78-286,521.78-89,757.34

Finding the Fourth Proportional to 191,140.78, 286,521.78 and 89,757.34

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Solution

The fourth proportional to 191,140.78, 286,521.78 and 89,757.34 is: 134,547.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,140.78 : 286,521.78 = 89,757.34 : x
  2. Step 2: Convert to fraction form
    191,140.78/286,521.78 = 89,757.34/x
  3. Step 3: Cross multiply
    191,140.78x = 286,521.78 × 89,757.34
  4. Step 4: Simplify right side
    191,140.78x = 25,717,430,943.47
  5. Step 5: Solve for x
    x = 25,717,430,943.47/191,140.78
  6. Step 6: Final answer
    x = 134,547.07

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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.