Home / 208,215.04-287,140.08-136,657.12

Finding the Fourth Proportional to 208,215.04, 287,140.08 and 136,657.12

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Solution

The fourth proportional to 208,215.04, 287,140.08 and 136,657.12 is: 188,457.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,215.04 : 287,140.08 = 136,657.12 : x
  2. Step 2: Convert to fraction form
    208,215.04/287,140.08 = 136,657.12/x
  3. Step 3: Cross multiply
    208,215.04x = 287,140.08 × 136,657.12
  4. Step 4: Simplify right side
    208,215.04x = 39,239,736,369.37
  5. Step 5: Solve for x
    x = 39,239,736,369.37/208,215.04
  6. Step 6: Final answer
    x = 188,457.74

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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.