Home / 186,315.42-257,106.78-101,432.28

Finding the Fourth Proportional to 186,315.42, 257,106.78 and 101,432.28

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Solution

The fourth proportional to 186,315.42, 257,106.78 and 101,432.28 is: 139,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,315.42 : 257,106.78 = 101,432.28 : x
  2. Step 2: Convert to fraction form
    186,315.42/257,106.78 = 101,432.28/x
  3. Step 3: Cross multiply
    186,315.42x = 257,106.78 × 101,432.28
  4. Step 4: Simplify right side
    186,315.42x = 26,078,926,898.86
  5. Step 5: Solve for x
    x = 26,078,926,898.86/186,315.42
  6. Step 6: Final answer
    x = 139,971.92

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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.