Home / 78,239.17-117,358.75-19,075.35

Finding the Fourth Proportional to 78,239.17, 117,358.75 and 19,075.35

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Solution

The fourth proportional to 78,239.17, 117,358.75 and 19,075.35 is: 28,613.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,239.17 : 117,358.75 = 19,075.35 : x
  2. Step 2: Convert to fraction form
    78,239.17/117,358.75 = 19,075.35/x
  3. Step 3: Cross multiply
    78,239.17x = 117,358.75 × 19,075.35
  4. Step 4: Simplify right side
    78,239.17x = 2,238,658,981.96
  5. Step 5: Solve for x
    x = 2,238,658,981.96/78,239.17
  6. Step 6: Final answer
    x = 28,613.02

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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.