Home / 130,698.88-180,220.38-90,342.58

Finding the Fourth Proportional to 130,698.88, 180,220.38 and 90,342.58

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Solution

The fourth proportional to 130,698.88, 180,220.38 and 90,342.58 is: 124,573.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,698.88 : 180,220.38 = 90,342.58 : x
  2. Step 2: Convert to fraction form
    130,698.88/180,220.38 = 90,342.58/x
  3. Step 3: Cross multiply
    130,698.88x = 180,220.38 × 90,342.58
  4. Step 4: Simplify right side
    130,698.88x = 16,281,573,774.06
  5. Step 5: Solve for x
    x = 16,281,573,774.06/130,698.88
  6. Step 6: Final answer
    x = 124,573.17

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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.