Home / 154,700.85-213,502.29-86,717.95

Finding the Fourth Proportional to 154,700.85, 213,502.29 and 86,717.95

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Solution

The fourth proportional to 154,700.85, 213,502.29 and 86,717.95 is: 119,679.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,700.85 : 213,502.29 = 86,717.95 : x
  2. Step 2: Convert to fraction form
    154,700.85/213,502.29 = 86,717.95/x
  3. Step 3: Cross multiply
    154,700.85x = 213,502.29 × 86,717.95
  4. Step 4: Simplify right side
    154,700.85x = 18,514,480,909.11
  5. Step 5: Solve for x
    x = 18,514,480,909.11/154,700.85
  6. Step 6: Final answer
    x = 119,679.24

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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.