Home / 112,765.54-155,688.16-70,386.34

Finding the Fourth Proportional to 112,765.54, 155,688.16 and 70,386.34

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Solution

The fourth proportional to 112,765.54, 155,688.16 and 70,386.34 is: 97,177.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,765.54 : 155,688.16 = 70,386.34 : x
  2. Step 2: Convert to fraction form
    112,765.54/155,688.16 = 70,386.34/x
  3. Step 3: Cross multiply
    112,765.54x = 155,688.16 × 70,386.34
  4. Step 4: Simplify right side
    112,765.54x = 10,958,319,763.73
  5. Step 5: Solve for x
    x = 10,958,319,763.73/112,765.54
  6. Step 6: Final answer
    x = 97,177.91

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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.