Home / 112,364.90-155,040.72-71,545.40

Finding the Fourth Proportional to 112,364.90, 155,040.72 and 71,545.40

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Solution

The fourth proportional to 112,364.90, 155,040.72 and 71,545.40 is: 98,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,364.90 : 155,040.72 = 71,545.40 : x
  2. Step 2: Convert to fraction form
    112,364.90/155,040.72 = 71,545.40/x
  3. Step 3: Cross multiply
    112,364.90x = 155,040.72 × 71,545.40
  4. Step 4: Simplify right side
    112,364.90x = 11,092,450,328.69
  5. Step 5: Solve for x
    x = 11,092,450,328.69/112,364.90
  6. Step 6: Final answer
    x = 98,718.11

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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.