Home / 72,148.63-108,219.86-70,459.17

Finding the Fourth Proportional to 72,148.63, 108,219.86 and 70,459.17

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Solution

The fourth proportional to 72,148.63, 108,219.86 and 70,459.17 is: 105,685.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,148.63 : 108,219.86 = 70,459.17 : x
  2. Step 2: Convert to fraction form
    72,148.63/108,219.86 = 70,459.17/x
  3. Step 3: Cross multiply
    72,148.63x = 108,219.86 × 70,459.17
  4. Step 4: Simplify right side
    72,148.63x = 7,625,081,513.12
  5. Step 5: Solve for x
    x = 7,625,081,513.12/72,148.63
  6. Step 6: Final answer
    x = 105,685.74

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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.