Home / 119,886.05-165,341.17-72,130.48

Finding the Fourth Proportional to 119,886.05, 165,341.17 and 72,130.48

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Solution

The fourth proportional to 119,886.05, 165,341.17 and 72,130.48 is: 99,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,886.05 : 165,341.17 = 72,130.48 : x
  2. Step 2: Convert to fraction form
    119,886.05/165,341.17 = 72,130.48/x
  3. Step 3: Cross multiply
    119,886.05x = 165,341.17 × 72,130.48
  4. Step 4: Simplify right side
    119,886.05x = 11,926,137,955.86
  5. Step 5: Solve for x
    x = 11,926,137,955.86/119,886.05
  6. Step 6: Final answer
    x = 99,478.95

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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.