Home / 251,688.18-347,329.74-138,510.93

Finding the Fourth Proportional to 251,688.18, 347,329.74 and 138,510.93

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Solution

The fourth proportional to 251,688.18, 347,329.74 and 138,510.93 is: 191,145.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,688.18 : 347,329.74 = 138,510.93 : x
  2. Step 2: Convert to fraction form
    251,688.18/347,329.74 = 138,510.93/x
  3. Step 3: Cross multiply
    251,688.18x = 347,329.74 × 138,510.93
  4. Step 4: Simplify right side
    251,688.18x = 48,108,965,304.06
  5. Step 5: Solve for x
    x = 48,108,965,304.06/251,688.18
  6. Step 6: Final answer
    x = 191,145.11

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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.