Home / 152,045.10-209,828.13-100,969.74

Finding the Fourth Proportional to 152,045.10, 209,828.13 and 100,969.74

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Solution

The fourth proportional to 152,045.10, 209,828.13 and 100,969.74 is: 139,342.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,045.10 : 209,828.13 = 100,969.74 : x
  2. Step 2: Convert to fraction form
    152,045.10/209,828.13 = 100,969.74/x
  3. Step 3: Cross multiply
    152,045.10x = 209,828.13 × 100,969.74
  4. Step 4: Simplify right side
    152,045.10x = 21,186,291,730.79
  5. Step 5: Solve for x
    x = 21,186,291,730.79/152,045.10
  6. Step 6: Final answer
    x = 139,342.15

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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.