Home / 257,075.85-385,609.65-70,087.35

Finding the Fourth Proportional to 257,075.85, 385,609.65 and 70,087.35

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Solution

The fourth proportional to 257,075.85, 385,609.65 and 70,087.35 is: 105,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,075.85 : 385,609.65 = 70,087.35 : x
  2. Step 2: Convert to fraction form
    257,075.85/385,609.65 = 70,087.35/x
  3. Step 3: Cross multiply
    257,075.85x = 385,609.65 × 70,087.35
  4. Step 4: Simplify right side
    257,075.85x = 27,026,358,502.93
  5. Step 5: Solve for x
    x = 27,026,358,502.93/257,075.85
  6. Step 6: Final answer
    x = 105,129.90

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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.