Home / 191,139.48-286,592.58-78,784.92

Finding the Fourth Proportional to 191,139.48, 286,592.58 and 78,784.92

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Solution

The fourth proportional to 191,139.48, 286,592.58 and 78,784.92 is: 118,129.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,139.48 : 286,592.58 = 78,784.92 : x
  2. Step 2: Convert to fraction form
    191,139.48/286,592.58 = 78,784.92/x
  3. Step 3: Cross multiply
    191,139.48x = 286,592.58 × 78,784.92
  4. Step 4: Simplify right side
    191,139.48x = 22,579,173,487.89
  5. Step 5: Solve for x
    x = 22,579,173,487.89/191,139.48
  6. Step 6: Final answer
    x = 118,129.30

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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.