Home / 103,170.51-142,349.40-60,720.84

Finding the Fourth Proportional to 103,170.51, 142,349.40 and 60,720.84

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Solution

The fourth proportional to 103,170.51, 142,349.40 and 60,720.84 is: 83,779.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,170.51 : 142,349.40 = 60,720.84 : x
  2. Step 2: Convert to fraction form
    103,170.51/142,349.40 = 60,720.84/x
  3. Step 3: Cross multiply
    103,170.51x = 142,349.40 × 60,720.84
  4. Step 4: Simplify right side
    103,170.51x = 8,643,575,141.50
  5. Step 5: Solve for x
    x = 8,643,575,141.50/103,170.51
  6. Step 6: Final answer
    x = 83,779.51

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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.