Home / 142,075.72-196,058.58-78,412.60

Finding the Fourth Proportional to 142,075.72, 196,058.58 and 78,412.60

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Solution

The fourth proportional to 142,075.72, 196,058.58 and 78,412.60 is: 108,206.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,075.72 : 196,058.58 = 78,412.60 : x
  2. Step 2: Convert to fraction form
    142,075.72/196,058.58 = 78,412.60/x
  3. Step 3: Cross multiply
    142,075.72x = 196,058.58 × 78,412.60
  4. Step 4: Simplify right side
    142,075.72x = 15,373,463,010.11
  5. Step 5: Solve for x
    x = 15,373,463,010.11/142,075.72
  6. Step 6: Final answer
    x = 108,206.12

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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.