Home / 97,985.36-135,187.77-57,140.22

Finding the Fourth Proportional to 97,985.36, 135,187.77 and 57,140.22

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Solution

The fourth proportional to 97,985.36, 135,187.77 and 57,140.22 is: 78,834.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,985.36 : 135,187.77 = 57,140.22 : x
  2. Step 2: Convert to fraction form
    97,985.36/135,187.77 = 57,140.22/x
  3. Step 3: Cross multiply
    97,985.36x = 135,187.77 × 57,140.22
  4. Step 4: Simplify right side
    97,985.36x = 7,724,658,919.11
  5. Step 5: Solve for x
    x = 7,724,658,919.11/97,985.36
  6. Step 6: Final answer
    x = 78,834.83

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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.