Home / 130,645.81-180,248.52-76,185.63

Finding the Fourth Proportional to 130,645.81, 180,248.52 and 76,185.63

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Solution

The fourth proportional to 130,645.81, 180,248.52 and 76,185.63 is: 105,111.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,645.81 : 180,248.52 = 76,185.63 : x
  2. Step 2: Convert to fraction form
    130,645.81/180,248.52 = 76,185.63/x
  3. Step 3: Cross multiply
    130,645.81x = 180,248.52 × 76,185.63
  4. Step 4: Simplify right side
    130,645.81x = 13,732,347,338.46
  5. Step 5: Solve for x
    x = 13,732,347,338.46/130,645.81
  6. Step 6: Final answer
    x = 105,111.27

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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.