Home / 138,339.17-190,915.16-84,607.32

Finding the Fourth Proportional to 138,339.17, 190,915.16 and 84,607.32

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Solution

The fourth proportional to 138,339.17, 190,915.16 and 84,607.32 is: 116,762.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,339.17 : 190,915.16 = 84,607.32 : x
  2. Step 2: Convert to fraction form
    138,339.17/190,915.16 = 84,607.32/x
  3. Step 3: Cross multiply
    138,339.17x = 190,915.16 × 84,607.32
  4. Step 4: Simplify right side
    138,339.17x = 16,152,819,611.93
  5. Step 5: Solve for x
    x = 16,152,819,611.93/138,339.17
  6. Step 6: Final answer
    x = 116,762.45

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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.