Home / 154,665.18-213,455.66-86,700.52

Finding the Fourth Proportional to 154,665.18, 213,455.66 and 86,700.52

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Solution

The fourth proportional to 154,665.18, 213,455.66 and 86,700.52 is: 119,656.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,665.18 : 213,455.66 = 86,700.52 : x
  2. Step 2: Convert to fraction form
    154,665.18/213,455.66 = 86,700.52/x
  3. Step 3: Cross multiply
    154,665.18x = 213,455.66 × 86,700.52
  4. Step 4: Simplify right side
    154,665.18x = 18,506,716,718.94
  5. Step 5: Solve for x
    x = 18,506,716,718.94/154,665.18
  6. Step 6: Final answer
    x = 119,656.65

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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.