Home / 130,778.07-180,427.28-85,482.17

Finding the Fourth Proportional to 130,778.07, 180,427.28 and 85,482.17

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Solution

The fourth proportional to 130,778.07, 180,427.28 and 85,482.17 is: 117,935.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,778.07 : 180,427.28 = 85,482.17 : x
  2. Step 2: Convert to fraction form
    130,778.07/180,427.28 = 85,482.17/x
  3. Step 3: Cross multiply
    130,778.07x = 180,427.28 × 85,482.17
  4. Step 4: Simplify right side
    130,778.07x = 15,423,315,421.60
  5. Step 5: Solve for x
    x = 15,423,315,421.60/130,778.07
  6. Step 6: Final answer
    x = 117,935.03

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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.