Home / 130,770.81-180,417.30-85,474.95

Finding the Fourth Proportional to 130,770.81, 180,417.30 and 85,474.95

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Solution

The fourth proportional to 130,770.81, 180,417.30 and 85,474.95 is: 117,925.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,770.81 : 180,417.30 = 85,474.95 : x
  2. Step 2: Convert to fraction form
    130,770.81/180,417.30 = 85,474.95/x
  3. Step 3: Cross multiply
    130,770.81x = 180,417.30 × 85,474.95
  4. Step 4: Simplify right side
    130,770.81x = 15,421,159,696.64
  5. Step 5: Solve for x
    x = 15,421,159,696.64/130,770.81
  6. Step 6: Final answer
    x = 117,925.09

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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.