Home / 121,075.76-181,630.56-42,178.40

Finding the Fourth Proportional to 121,075.76, 181,630.56 and 42,178.40

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Solution

The fourth proportional to 121,075.76, 181,630.56 and 42,178.40 is: 63,273.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,075.76 : 181,630.56 = 42,178.40 : x
  2. Step 2: Convert to fraction form
    121,075.76/181,630.56 = 42,178.40/x
  3. Step 3: Cross multiply
    121,075.76x = 181,630.56 × 42,178.40
  4. Step 4: Simplify right side
    121,075.76x = 7,660,886,411.90
  5. Step 5: Solve for x
    x = 7,660,886,411.90/121,075.76
  6. Step 6: Final answer
    x = 63,273.49

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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.