Home / 130,436.60-180,045.26-76,718.84

Finding the Fourth Proportional to 130,436.60, 180,045.26 and 76,718.84

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Solution

The fourth proportional to 130,436.60, 180,045.26 and 76,718.84 is: 105,897.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,436.60 : 180,045.26 = 76,718.84 : x
  2. Step 2: Convert to fraction form
    130,436.60/180,045.26 = 76,718.84/x
  3. Step 3: Cross multiply
    130,436.60x = 180,045.26 × 76,718.84
  4. Step 4: Simplify right side
    130,436.60x = 13,812,863,494.70
  5. Step 5: Solve for x
    x = 13,812,863,494.70/130,436.60
  6. Step 6: Final answer
    x = 105,897.14

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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.