Home / 153,779.07-212,302.31-100,037.19

Finding the Fourth Proportional to 153,779.07, 212,302.31 and 100,037.19

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Solution

The fourth proportional to 153,779.07, 212,302.31 and 100,037.19 is: 138,108.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,779.07 : 212,302.31 = 100,037.19 : x
  2. Step 2: Convert to fraction form
    153,779.07/212,302.31 = 100,037.19/x
  3. Step 3: Cross multiply
    153,779.07x = 212,302.31 × 100,037.19
  4. Step 4: Simplify right side
    153,779.07x = 21,238,126,022.72
  5. Step 5: Solve for x
    x = 21,238,126,022.72/153,779.07
  6. Step 6: Final answer
    x = 138,108.04

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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.