Home / 130,141.55-179,594.08-72,780.22

Finding the Fourth Proportional to 130,141.55, 179,594.08 and 72,780.22

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Solution

The fourth proportional to 130,141.55, 179,594.08 and 72,780.22 is: 100,436.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,141.55 : 179,594.08 = 72,780.22 : x
  2. Step 2: Convert to fraction form
    130,141.55/179,594.08 = 72,780.22/x
  3. Step 3: Cross multiply
    130,141.55x = 179,594.08 × 72,780.22
  4. Step 4: Simplify right side
    130,141.55x = 13,070,896,695.64
  5. Step 5: Solve for x
    x = 13,070,896,695.64/130,141.55
  6. Step 6: Final answer
    x = 100,436.00

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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.