Home / 103,837.40-155,756.10-77,265.35

Finding the Fourth Proportional to 103,837.40, 155,756.10 and 77,265.35

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Solution

The fourth proportional to 103,837.40, 155,756.10 and 77,265.35 is: 115,898.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,837.40 : 155,756.10 = 77,265.35 : x
  2. Step 2: Convert to fraction form
    103,837.40/155,756.10 = 77,265.35/x
  3. Step 3: Cross multiply
    103,837.40x = 155,756.10 × 77,265.35
  4. Step 4: Simplify right side
    103,837.40x = 12,034,549,581.14
  5. Step 5: Solve for x
    x = 12,034,549,581.14/103,837.40
  6. Step 6: Final answer
    x = 115,898.03

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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.