Home / 112,364.40-155,084.67-72,129.06

Finding the Fourth Proportional to 112,364.40, 155,084.67 and 72,129.06

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Solution

The fourth proportional to 112,364.40, 155,084.67 and 72,129.06 is: 99,552.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,364.40 : 155,084.67 = 72,129.06 : x
  2. Step 2: Convert to fraction form
    112,364.40/155,084.67 = 72,129.06/x
  3. Step 3: Cross multiply
    112,364.40x = 155,084.67 × 72,129.06
  4. Step 4: Simplify right side
    112,364.40x = 11,186,111,467.51
  5. Step 5: Solve for x
    x = 11,186,111,467.51/112,364.40
  6. Step 6: Final answer
    x = 99,552.10

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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.