Home / 153,215.23-229,533.07-86,703.10

Finding the Fourth Proportional to 153,215.23, 229,533.07 and 86,703.10

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Solution

The fourth proportional to 153,215.23, 229,533.07 and 86,703.10 is: 129,890.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,215.23 : 229,533.07 = 86,703.10 : x
  2. Step 2: Convert to fraction form
    153,215.23/229,533.07 = 86,703.10/x
  3. Step 3: Cross multiply
    153,215.23x = 229,533.07 × 86,703.10
  4. Step 4: Simplify right side
    153,215.23x = 19,901,228,721.52
  5. Step 5: Solve for x
    x = 19,901,228,721.52/153,215.23
  6. Step 6: Final answer
    x = 129,890.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.