Home / 158,631.32-218,911.02-87,011.66

Finding the Fourth Proportional to 158,631.32, 218,911.02 and 87,011.66

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Solution

The fourth proportional to 158,631.32, 218,911.02 and 87,011.66 is: 120,075.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,631.32 : 218,911.02 = 87,011.66 : x
  2. Step 2: Convert to fraction form
    158,631.32/218,911.02 = 87,011.66/x
  3. Step 3: Cross multiply
    158,631.32x = 218,911.02 × 87,011.66
  4. Step 4: Simplify right side
    158,631.32x = 19,047,811,242.49
  5. Step 5: Solve for x
    x = 19,047,811,242.49/158,631.32
  6. Step 6: Final answer
    x = 120,075.98

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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.