Home / 130,151.80-195,458.10-100,641.40

Finding the Fourth Proportional to 130,151.80, 195,458.10 and 100,641.40

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Solution

The fourth proportional to 130,151.80, 195,458.10 and 100,641.40 is: 151,140.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,151.80 : 195,458.10 = 100,641.40 : x
  2. Step 2: Convert to fraction form
    130,151.80/195,458.10 = 100,641.40/x
  3. Step 3: Cross multiply
    130,151.80x = 195,458.10 × 100,641.40
  4. Step 4: Simplify right side
    130,151.80x = 19,671,176,825.34
  5. Step 5: Solve for x
    x = 19,671,176,825.34/130,151.80
  6. Step 6: Final answer
    x = 151,140.26

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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.