Home / 103,521.48-142,868.76-61,071.72

Finding the Fourth Proportional to 103,521.48, 142,868.76 and 61,071.72

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Solution

The fourth proportional to 103,521.48, 142,868.76 and 61,071.72 is: 84,284.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,521.48 : 142,868.76 = 61,071.72 : x
  2. Step 2: Convert to fraction form
    103,521.48/142,868.76 = 61,071.72/x
  3. Step 3: Cross multiply
    103,521.48x = 142,868.76 × 61,071.72
  4. Step 4: Simplify right side
    103,521.48x = 8,725,240,907.47
  5. Step 5: Solve for x
    x = 8,725,240,907.47/103,521.48
  6. Step 6: Final answer
    x = 84,284.35

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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.