Home / 197,142.27-272,147.15-115,459.16

Finding the Fourth Proportional to 197,142.27, 272,147.15 and 115,459.16

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Solution

The fourth proportional to 197,142.27, 272,147.15 and 115,459.16 is: 159,386.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,142.27 : 272,147.15 = 115,459.16 : x
  2. Step 2: Convert to fraction form
    197,142.27/272,147.15 = 115,459.16/x
  3. Step 3: Cross multiply
    197,142.27x = 272,147.15 × 115,459.16
  4. Step 4: Simplify right side
    197,142.27x = 31,421,880,263.31
  5. Step 5: Solve for x
    x = 31,421,880,263.31/197,142.27
  6. Step 6: Final answer
    x = 159,386.82

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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.