Home / 153,864.24-212,335.80-86,795.76

Finding the Fourth Proportional to 153,864.24, 212,335.80 and 86,795.76

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Solution

The fourth proportional to 153,864.24, 212,335.80 and 86,795.76 is: 119,779.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,864.24 : 212,335.80 = 86,795.76 : x
  2. Step 2: Convert to fraction form
    153,864.24/212,335.80 = 86,795.76/x
  3. Step 3: Cross multiply
    153,864.24x = 212,335.80 × 86,795.76
  4. Step 4: Simplify right side
    153,864.24x = 18,429,847,136.21
  5. Step 5: Solve for x
    x = 18,429,847,136.21/153,864.24
  6. Step 6: Final answer
    x = 119,779.93

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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.