Home / 130,316.13-195,217.90-85,807.95

Finding the Fourth Proportional to 130,316.13, 195,217.90 and 85,807.95

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Solution

The fourth proportional to 130,316.13, 195,217.90 and 85,807.95 is: 128,543.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,316.13 : 195,217.90 = 85,807.95 : x
  2. Step 2: Convert to fraction form
    130,316.13/195,217.90 = 85,807.95/x
  3. Step 3: Cross multiply
    130,316.13x = 195,217.90 × 85,807.95
  4. Step 4: Simplify right side
    130,316.13x = 16,751,247,802.31
  5. Step 5: Solve for x
    x = 16,751,247,802.31/130,316.13
  6. Step 6: Final answer
    x = 128,543.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.