Home / 100,970.09-139,339.26-57,946.15

Finding the Fourth Proportional to 100,970.09, 139,339.26 and 57,946.15

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Solution

The fourth proportional to 100,970.09, 139,339.26 and 57,946.15 is: 79,966.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,970.09 : 139,339.26 = 57,946.15 : x
  2. Step 2: Convert to fraction form
    100,970.09/139,339.26 = 57,946.15/x
  3. Step 3: Cross multiply
    100,970.09x = 139,339.26 × 57,946.15
  4. Step 4: Simplify right side
    100,970.09x = 8,074,173,312.50
  5. Step 5: Solve for x
    x = 8,074,173,312.50/100,970.09
  6. Step 6: Final answer
    x = 79,966.00

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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.