Home / 208,802.64-288,386.88-137,501.36

Finding the Fourth Proportional to 208,802.64, 288,386.88 and 137,501.36

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Solution

The fourth proportional to 208,802.64, 288,386.88 and 137,501.36 is: 189,909.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,802.64 : 288,386.88 = 137,501.36 : x
  2. Step 2: Convert to fraction form
    208,802.64/288,386.88 = 137,501.36/x
  3. Step 3: Cross multiply
    208,802.64x = 288,386.88 × 137,501.36
  4. Step 4: Simplify right side
    208,802.64x = 39,653,588,206.16
  5. Step 5: Solve for x
    x = 39,653,588,206.16/208,802.64
  6. Step 6: Final answer
    x = 189,909.42

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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.