Home / 103,690.10-155,535.15-64,291.70

Finding the Fourth Proportional to 103,690.10, 155,535.15 and 64,291.70

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Solution

The fourth proportional to 103,690.10, 155,535.15 and 64,291.70 is: 96,437.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,690.10 : 155,535.15 = 64,291.70 : x
  2. Step 2: Convert to fraction form
    103,690.10/155,535.15 = 64,291.70/x
  3. Step 3: Cross multiply
    103,690.10x = 155,535.15 × 64,291.70
  4. Step 4: Simplify right side
    103,690.10x = 9,999,619,203.26
  5. Step 5: Solve for x
    x = 9,999,619,203.26/103,690.10
  6. Step 6: Final answer
    x = 96,437.55

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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.