Home / 145,905.64-201,349.70-78,837.64

Finding the Fourth Proportional to 145,905.64, 201,349.70 and 78,837.64

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Solution

The fourth proportional to 145,905.64, 201,349.70 and 78,837.64 is: 108,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,905.64 : 201,349.70 = 78,837.64 : x
  2. Step 2: Convert to fraction form
    145,905.64/201,349.70 = 78,837.64/x
  3. Step 3: Cross multiply
    145,905.64x = 201,349.70 × 78,837.64
  4. Step 4: Simplify right side
    145,905.64x = 15,873,935,162.71
  5. Step 5: Solve for x
    x = 15,873,935,162.71/145,905.64
  6. Step 6: Final answer
    x = 108,795.90

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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.