Home / 125,300.95-172,899.81-80,005.46

Finding the Fourth Proportional to 125,300.95, 172,899.81 and 80,005.46

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Solution

The fourth proportional to 125,300.95, 172,899.81 and 80,005.46 is: 110,397.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,300.95 : 172,899.81 = 80,005.46 : x
  2. Step 2: Convert to fraction form
    125,300.95/172,899.81 = 80,005.46/x
  3. Step 3: Cross multiply
    125,300.95x = 172,899.81 × 80,005.46
  4. Step 4: Simplify right side
    125,300.95x = 13,832,927,968.46
  5. Step 5: Solve for x
    x = 13,832,927,968.46/125,300.95
  6. Step 6: Final answer
    x = 110,397.63

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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.