Home / 102,040.15-153,005.55-42,808.90

Finding the Fourth Proportional to 102,040.15, 153,005.55 and 42,808.90

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Solution

The fourth proportional to 102,040.15, 153,005.55 and 42,808.90 is: 64,190.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,040.15 : 153,005.55 = 42,808.90 : x
  2. Step 2: Convert to fraction form
    102,040.15/153,005.55 = 42,808.90/x
  3. Step 3: Cross multiply
    102,040.15x = 153,005.55 × 42,808.90
  4. Step 4: Simplify right side
    102,040.15x = 6,549,999,289.40
  5. Step 5: Solve for x
    x = 6,549,999,289.40/102,040.15
  6. Step 6: Final answer
    x = 64,190.41

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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.