Home / 101,715.50-140,368.35-57,004.46

Finding the Fourth Proportional to 101,715.50, 140,368.35 and 57,004.46

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Solution

The fourth proportional to 101,715.50, 140,368.35 and 57,004.46 is: 78,666.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,715.50 : 140,368.35 = 57,004.46 : x
  2. Step 2: Convert to fraction form
    101,715.50/140,368.35 = 57,004.46/x
  3. Step 3: Cross multiply
    101,715.50x = 140,368.35 × 57,004.46
  4. Step 4: Simplify right side
    101,715.50x = 8,001,621,992.84
  5. Step 5: Solve for x
    x = 8,001,621,992.84/101,715.50
  6. Step 6: Final answer
    x = 78,666.69

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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.