Home / 191,048.12-286,682.90-78,707.40

Finding the Fourth Proportional to 191,048.12, 286,682.90 and 78,707.40

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Solution

The fourth proportional to 191,048.12, 286,682.90 and 78,707.40 is: 118,106.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,048.12 : 286,682.90 = 78,707.40 : x
  2. Step 2: Convert to fraction form
    191,048.12/286,682.90 = 78,707.40/x
  3. Step 3: Cross multiply
    191,048.12x = 286,682.90 × 78,707.40
  4. Step 4: Simplify right side
    191,048.12x = 22,564,064,214.86
  5. Step 5: Solve for x
    x = 22,564,064,214.86/191,048.12
  6. Step 6: Final answer
    x = 118,106.71

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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.