Home / 117,931.27-162,703.64-77,119.29

Finding the Fourth Proportional to 117,931.27, 162,703.64 and 77,119.29

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Solution

The fourth proportional to 117,931.27, 162,703.64 and 77,119.29 is: 106,397.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,931.27 : 162,703.64 = 77,119.29 : x
  2. Step 2: Convert to fraction form
    117,931.27/162,703.64 = 77,119.29/x
  3. Step 3: Cross multiply
    117,931.27x = 162,703.64 × 77,119.29
  4. Step 4: Simplify right side
    117,931.27x = 12,547,588,956.22
  5. Step 5: Solve for x
    x = 12,547,588,956.22/117,931.27
  6. Step 6: Final answer
    x = 106,397.47

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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.