Home / 112,968.36-155,897.92-61,980.16

Finding the Fourth Proportional to 112,968.36, 155,897.92 and 61,980.16

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Solution

The fourth proportional to 112,968.36, 155,897.92 and 61,980.16 is: 85,533.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,968.36 : 155,897.92 = 61,980.16 : x
  2. Step 2: Convert to fraction form
    112,968.36/155,897.92 = 61,980.16/x
  3. Step 3: Cross multiply
    112,968.36x = 155,897.92 × 61,980.16
  4. Step 4: Simplify right side
    112,968.36x = 9,662,578,025.27
  5. Step 5: Solve for x
    x = 9,662,578,025.27/112,968.36
  6. Step 6: Final answer
    x = 85,533.49

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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.