Home / 145,905.13-201,349.02-78,837.13

Finding the Fourth Proportional to 145,905.13, 201,349.02 and 78,837.13

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Solution

The fourth proportional to 145,905.13, 201,349.02 and 78,837.13 is: 108,795.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,905.13 : 201,349.02 = 78,837.13 : x
  2. Step 2: Convert to fraction form
    145,905.13/201,349.02 = 78,837.13/x
  3. Step 3: Cross multiply
    145,905.13x = 201,349.02 × 78,837.13
  4. Step 4: Simplify right side
    145,905.13x = 15,873,778,865.11
  5. Step 5: Solve for x
    x = 15,873,778,865.11/145,905.13
  6. Step 6: Final answer
    x = 108,795.21

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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.