Home / 130,140.49-179,592.63-72,779.18

Finding the Fourth Proportional to 130,140.49, 179,592.63 and 72,779.18

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Solution

The fourth proportional to 130,140.49, 179,592.63 and 72,779.18 is: 100,434.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,140.49 : 179,592.63 = 72,779.18 : x
  2. Step 2: Convert to fraction form
    130,140.49/179,592.63 = 72,779.18/x
  3. Step 3: Cross multiply
    130,140.49x = 179,592.63 × 72,779.18
  4. Step 4: Simplify right side
    130,140.49x = 13,070,603,174.56
  5. Step 5: Solve for x
    x = 13,070,603,174.56/130,140.49
  6. Step 6: Final answer
    x = 100,434.56

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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.