Home / 100,935.40-151,731.15-86,501.20

Finding the Fourth Proportional to 100,935.40, 151,731.15 and 86,501.20

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Solution

The fourth proportional to 100,935.40, 151,731.15 and 86,501.20 is: 130,032.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,935.40 : 151,731.15 = 86,501.20 : x
  2. Step 2: Convert to fraction form
    100,935.40/151,731.15 = 86,501.20/x
  3. Step 3: Cross multiply
    100,935.40x = 151,731.15 × 86,501.20
  4. Step 4: Simplify right side
    100,935.40x = 13,124,926,552.38
  5. Step 5: Solve for x
    x = 13,124,926,552.38/100,935.40
  6. Step 6: Final answer
    x = 130,032.94

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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.