Home / 155,888.10-215,120.34-98,558.28

Finding the Fourth Proportional to 155,888.10, 215,120.34 and 98,558.28

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Solution

The fourth proportional to 155,888.10, 215,120.34 and 98,558.28 is: 136,007.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,888.10 : 215,120.34 = 98,558.28 : x
  2. Step 2: Convert to fraction form
    155,888.10/215,120.34 = 98,558.28/x
  3. Step 3: Cross multiply
    155,888.10x = 215,120.34 × 98,558.28
  4. Step 4: Simplify right side
    155,888.10x = 21,201,890,703.42
  5. Step 5: Solve for x
    x = 21,201,890,703.42/155,888.10
  6. Step 6: Final answer
    x = 136,007.11

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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.