Home / 131,155.36-180,985.08-77,437.60

Finding the Fourth Proportional to 131,155.36, 180,985.08 and 77,437.60

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Solution

The fourth proportional to 131,155.36, 180,985.08 and 77,437.60 is: 106,858.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,155.36 : 180,985.08 = 77,437.60 : x
  2. Step 2: Convert to fraction form
    131,155.36/180,985.08 = 77,437.60/x
  3. Step 3: Cross multiply
    131,155.36x = 180,985.08 × 77,437.60
  4. Step 4: Simplify right side
    131,155.36x = 14,015,050,231.01
  5. Step 5: Solve for x
    x = 14,015,050,231.01/131,155.36
  6. Step 6: Final answer
    x = 106,858.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.