Home / 134,036.20-201,207.90-78,663.40

Finding the Fourth Proportional to 134,036.20, 201,207.90 and 78,663.40

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Solution

The fourth proportional to 134,036.20, 201,207.90 and 78,663.40 is: 118,085.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,036.20 : 201,207.90 = 78,663.40 : x
  2. Step 2: Convert to fraction form
    134,036.20/201,207.90 = 78,663.40/x
  3. Step 3: Cross multiply
    134,036.20x = 201,207.90 × 78,663.40
  4. Step 4: Simplify right side
    134,036.20x = 15,827,697,520.86
  5. Step 5: Solve for x
    x = 15,827,697,520.86/134,036.20
  6. Step 6: Final answer
    x = 118,085.25

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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.