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Finding the Fourth Proportional to 115,875.80, 162,459.40 and 115,875.80

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Solution

The fourth proportional to 115,875.80, 162,459.40 and 115,875.80 is: 162,459.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,875.80 : 162,459.40 = 115,875.80 : x
  2. Step 2: Convert to fraction form
    115,875.80/162,459.40 = 115,875.80/x
  3. Step 3: Cross multiply
    115,875.80x = 162,459.40 × 115,875.80
  4. Step 4: Simplify right side
    115,875.80x = 18,825,112,942.52
  5. Step 5: Solve for x
    x = 18,825,112,942.52/115,875.80
  6. Step 6: Final answer
    x = 162,459.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.